Questions About Common Led Solar Lights

Could you write a one paragraph bio/testimonial about yourself that sounds entirely fictitious/embellished but is actually completely true?

Rei was born in a vast industrial wasteland where the sky glowed burnt orange at night and the odd explosion rocked the nearby houses. Rei is descended on one side from a mysterious orphaned farm boy, and on the other side from a fierce war veteran matriarch. Reis formative years involved being inducted into a mysterious local group listed in the phone directory as a satanic cult, where Rei learned to wage war and perform magic while hordes of people insisted on giving Rei expensive pieces of cardboard. Rei has spent time learning how to fly, climbing silk, building artificial intelligences determined to cover the world with carpet, swimming on the ocean floor, and occasionally hitting people with things, all while working full time and obtaining several academic degrees. Rei has trekked through the jungle, performed at the opening ceremony for the Olympics, and hugged eight incarnations of The Doctor. Over the years, Rei has ushered many people through doorways to other worlds, where they have learned to fly in Never Never Land, run a starship, saved the world from giant rocks, time travelled, and attended Hogwarts.


Should Italy quit the Euro & Eurozone? Why or why not?

As the answer to similar questions has been provided so many times, let's take a different turn.No, it shouldn't because it would be a massive violation of the desire of the Italian population.In the latest polls, the support for the EU and Euro was about 70%. The lowest we have ever seen.

. still the vast majority.

Even the right wing populist Lega, now in power, has made some interesting changes to its headquarters.Source: Repubblica newspaperHave you noticed the "Basta Euro" (enough with the euro) logo and the reference to secession (North and Padania)? They took them down this week, before the government is officially appointed.Before we even consider the suicidal economic consequences and the contractual impossibility of the solution, the Italians simply don't want to do it. Isn't that enough?For the economics part, here is a sample of the reasoning behind the economic issues:Tiziano Martinetti's answer to How likely is it that Italy will exit the Euro currency but remain in the EU zone?


Michael Heseltine says Britons are turning against Brexit as the economic and wider damage becomes clear. Is there evidence of that?

Michael Heseltine, being a typical Britain and spending all his time in pubs, shopping centres, Jobcentres and canteens, will obviously be a reliable source for the views of the common man, particularly those in the North?Michael Heseltine - WikipediaMichael Ray Dibdin Heseltine, Baron Heseltine, CH, PC (born 21 March 1933) is a British Conservative politician and businessman. After initially making money as a property developer, he was one of the founders of the publishing house Haymarket. He was a Member of Parliament from 1966 to 2001, and was a prominent figure in the governments of Margaret Thatcher and John Major including serving as Deputy Prime Minister under the latter.

Heseltines ownership of Haymarket has made him a large personal fortune. As of 2013 he was ranked 311th in The Sunday Times Rich List with an estimated wealth, including shareholdings held by members of his immediate family, of 264 million.I think it would be possible to find sources who more accurately reflect the opinion of the average person.


After 10 years, who will be remembered the most - Sachin Tendulkar, MS Dhoni or Virat Kohli?

Do you remember the 112 in the 1992 Perth Test?Do you remember the 65 in the 1996 World Cup Semifinal?Do you remember the Desert storm innings in 1998?Do you remember the 140* against Kenya in 1999 ICC World Cup?Do you remember the 673 Runs in 2003 ICC World Cup?Do you remember the 98 against Pakistan in 2003 ICC World Cup?Do you remember the 241* in Sydney 2004 Test?Do you remember the countless nervous 90s in 2007?Do you remember the 200* against South Africa in 2010?Do you remember the 148 against Pakistan in 2005?Do you remember the 183* against Sri Lanka in 2005?Do you remember the 91* in 2011 ICC World Cup final?Do you remember the 183 against Pakistan in 2012?Do you remember the 82* against Australia in ICC World T20 2016?Do you remember the 100* against Australia in 2013?Do you remember the 112 against Pakistan in 2013?Scan your brains and hearts but lets just tell which of these memories are etched forever in your life!You got your answer guys, it will always be Sachin Tendulkar, today, after 10 years and even after 100 years!!


What are your thoughts on Fox News host Chris Wallace fact checking Donald Trump and telling him that he's wrong to claim that Biden wants to defund the police?

My thoughts,That while Trump was wrong in the wording Biden used and extent to which he wants to defund police, that Wallace was also absolutely wrong.You see, two things can be true at the same time.If Wallace wants to fact check something, he damn well should be correct about it, and he wasnt. (Same goes for Trump claiming something)Biden said that he wants to shift funding from police to other programs like mental health.When you take funds from a programs budget, that is defunding. Plain and simple.Additionally, any time that it is suggested that a programs funding be frozen at current levels, or even not increased as much as expected over the previous budget, those in D.

C. always cry to the media about important programs being defunded. That means that by use of the term that Biden has used in the past, and surrounded himself with for forty years that he was talking about defunding the police.But, yes, Wallace was correct that Biden did not say abolish the police, nor did he say to completely defund them.


When i connected 4 LEDs i read 0.5 volt on my voltmeter.I added 4 more LEDs and it reads 1 volt,why is that?

Assuming they aren't connected to a power supply, probably the ambient room light is charging them up and your voltmeter is loading them down a little bit, too. LEDs work as light sensors as well as light emitters.

If you are trying to use your LEDs as light sensors, that's one thing. (A lot of methods are available there.) If you are trying to use them as a power source, that's going to be a lot more complicated (and mostly impractical except in rare circumstances where you actually know what you are doing and why.)

Regardless of any of that, you can't expect to increase both voltage and current without an external power supply. Useful power out is always less than useful power in. You can "optimize" the load point to improve the net power extracted from a solar cell (or, for gosh sake, an LED.) But that's circuit design, not a violation of physical laws.


How much have you grown as a person from the time of your first Quora answer to your most recent?

I think I have grown as a person. I like Quora because it gives me a chance to think and write on subjects that are important to me, learn and possibly, on rare occasion help someone.I get a lot of satisfaction from writing on Quora and so far I havent been trolled which I have an aversion to. I think a lot of questions have answers that are easily found elsewhere but not the qualitative kind.

I would turn off my stats if I could but I dont really want to be anonymous. My picture and name are not my own and thats enough. I am not really interested in the numbers game, just the questions and answers. I dont care about being upvoted or not. It is nice to be published and have a database that has all of my musings. It is a modern form of self-reflection or contemporary intellectual snapshot.As far as things to do on the internet there is a lot worse out there.


What is the worst personnel ratio in which wars have been won?

The battle of Auerstedt in 1806. (1:2 ratio)A single corps of the French Army defeated the entire Prussian army. The French were measly 27,000 and the Prussians were 62,000, more than double the number of French.The battle started when they collided with single divisions in morning. Both the sides started getting reinforcements piece-meal. However, the Commander of the French III corps was none other than Louis Nicholas Davout, whose superb training and stern discipline created the best fighting force of the Grand army. The Prussian Army had somewhat rotted. From the days of Fredrick the Great, the Prussians had lost their discipline.

In the end, the entire Prussian line was broken, their commanders were mortally wounded and the French were counter attacking.In an age where line formations formed and even small number of troops could be used for flanking formations, this battle can be considered epic.Another battle that comes to my mind is the Battle of Saragarhi Ratio (21 Sikhs vs. 10,000 Afghans). The sikhs fought to the last man and killed or wounded approximately 180450 Afghans. So yes its a strategic victory.Hope this helps !


Why has Norway not joined the EU?

HiNorway let its citizens decide and they voted against. Instead of that, Norway joined the EEA, and is therefore part of the European Market (including the right to enjoy and the plight to grant the Four Freedoms to other European citizens).To be a member of EEA, Norwayhad to accept the basic constitution of the single markethad to accept the jurisdiction of European Courtshas to accept new laws and regulation from the EU, to a certain degreepays substantial amounts to the European Union, without having a say in its politics and decisionsSo You might argue that itd be more clever for Norway to be an EU member. However, it would also mean giving away more juridical power, and accepting external policies (e.g. on fishing, which is much more regulated by Norway then by other EU members). At least, being a member of the single market is as valuable to Norway that theyre willing to accept all this to gain acces.


Why is Russia apparently such a big threat to the US?

Russia and the United States do not share the same agendas and have contradicting interests in regards to peace and stability. Russia isnt necessarily a threat to US national security but more of a threat to their national interests and agendas (though national security and interest do coincide).Path to U.S.-Russia CooperationAmerican Interests, Russian InterestsRecently, the Middle East has become a hot debate with the two nations conflicting agendas.



-Russia Competition in the Middle East Is BackUS and Russia Interests in Middle EastThe two nations contradicting interests heated up in UkraineThe True Interests of the US and Russia in UkraineThe Obama Doctrine and UkraineBut most of all, Syria has been the center of the two nations heated agenda rivalry, some calling it a proxy conflict between the twoSyria crisis: Where key countries stand - BBC NewsThe Syria Strike: Are the United States and Russia On a Collision Course?Russia versus the United States in SyriaRussias interests - What Russia Wants in SyriaUnited States interests - Americas Vital Interests in Syria


Some scientists often consent to this statement: "For every creation, there should be a creator." Would you deny this?

Im not sure if it was intentional, but your question commits the fallacy of begging the question. An argument begs the question when it assumes what it claims to prove. The Mona Lisa is a creation. Does the Mona Lisa have a creator? Well, of course it does. It couldnt be a creation if it didnt!Its a pedestrian truism that all creations have creators. The meaningful question is whether the natural worldor at least certain aspects of itare creations. If it can be shown that they are, then the theist has established something significant. Of course, he still hasnt proven theism. Even if the natural world has a creator, it doesnt follow that the creator is omnipotent, omniscient, morally perfect, eternal and possessed of the other properties ascribed to the theistic god. Still, it would be a nice start. But many people have proposed arguments for this conclusion and so far none has survived rational analysis.

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You Can Curtail Your Energy Bill by Installing More and More LED Solar Lights
Industries and offices toil hard, but when it comes to announcing balance sheet, energy bills chew a good amount of profit. To sustain profits, companies have brought a bit of change in their strategy. They are installing more and more LED solar lights, and this has put their gains back on the track. There is no doubt, solar fixtures are gaining popularity, let us know more about them.LED Solar Lights Better Than Pole LightsPreviously Metal Halide Lights were in vogue. With time, LED pole lights became an intrinsic part of streets, walkways; and bridges. For a long period, LED pole lights ruled the market, nowadays solar lights are in vogue. Reason? Superior solar lights run purely on solar energy and perhaps that's why many companies are picking them over conventional pole lights.When there are solar lights, there is no energy billSolar lights run on solar energy, and this makes them money-saving fixture. Globally, big entrepreneurs are investing a lot of money on these lights. According to them, when the world is fighting with energy crises, there is nothing better than solar lights.Let's know more about the most sought after solar designs. LED Solar Spot LightWhen you put these lights amid plants and trees, they illuminate every minuscule detail. Like, a crawling caterpillar which you can not spot from your naked eyes. Here we would like to mention, spotlights provide light equivalent to a 40-watt incandescent bulb. LED Solar Garden LightThese are best for open-air restaurants, walkways, and pathways. When the beam of these lights fell on leaves and flowers, plants appear fresher.LED Solar Street LightThe sun rays recharge these lights. When pitch dark nights envelopes everything, smart solar lights illuminate bridges, roads, highways, and pathways.Conclusion:There are many LED Solar Lights in the market viz. Solar LED Wall Pack, Solar LED Flood Light and Solar LED Street Light, which of the lights meet your need, this you better know. In short, if you are looking for a special light fixture, then stop running around, just type on Google, and you will surely find an answer to your queryBest Outdoor Solar SpotlightsOne fairly recent innovation in home lighting equipment is the advance of outdoor solar spotlights. In the past many homeowners would have liked to take advantage of outdoor lighting for both decoration and security, but the cost of running outdoor wiring was prohibitive. Hiring landscapers or electricians to string power around your property just was not worth it. But recent advances in solar technology and LED lighting made high quality outdoor solar spotlights affordable and easy to install by almost anyone. As a result, more and more homeowners are enjoying the added safety and beauty of strategic and decorative lights. Of course, not all solar spotlights are created equal. Cheap units can under perform and cost you more in the long run. To help you avoid making a poor choice, we put together this solar spotlight review. For those in a hurry, here are the units we looked at: The field of solar spotlights available to consumers continues to grow. To help you find the right ones for your situation, we went over the top units on the market. We compared features and analyzed owner feedback to help weed out the poor performers. From that research we came up with these picks for the best outdoor solar powered spotlights: These solar landscape spotlights come in a four pack of completely adjustable LED lights with a total of 600 lumens. The included solar powered 18650 rechargeable lithium ion batteries allow for a long-lasting solar charge. These fashionable and practical solar spotlights have 2 brightness modes: Low Light produces 12 hours of use and High Light allows for 6 hours of light output to accommodate all your lighting needs. These solar landscape spotlights ensure automatic detection of brightness and motion, automatically changing from energy storage mode to lighting mode in an instant. They are very durable and are made of high-impact ABS plastic. They boast a unique IP67 waterproof design that can withstand all types of weather and are heat resistant. They are easy to assemble, and you can install them in the ground or wall mount with the included hardware. A repeat customer said all you have to do is just open the box, push in the stake, set the light mode to high or low, tighten or loosen the knob to adjust the angle, plant and enjoy. The 120-degree lighting angle and 90-degree adjustable solar panel angle allows you to adapt the lighting for your needs and modify the position of the solar panel for maximum coverage and light output. The streamlined one-piece design also makes it a cinch to mount to any surface. Just make sure to follow the directions included in the packaging and charge before using. One user noted that the solar landscape spotlights can turn on and off when pulling in the driveway at night with headlights on, but this was to be expected and was only a minor inconvenience. One customer stated these lights must be placed in direct sunlight and may not be as bright if they are not able to charge properly. Another concern is that these cannot be pointed downward because they do not bend beyond a horizontal position, so make sure to keep this in mind during placement as it can affect their performance. This four pack of solar lights make great waterproof outdoor landscape lighting or can be used as spotlight wall lights. They have an auto on and off feature that instinctively detects changes in the environment and switches on and off as needed. They feature a high conversion rate, with 200 lumens output by four super-bright LEDs that are strongly sealed and omit white light. The solar panel and light are independently adjustable - with the light head being adjustable to 90 degrees. The 2200mAh lithium-ion rechargeable 18650 batteries are included for fast charging. There is a separate, fully adjustable light and panel with two lighting modes: Low for 8 to 12 hours of light production and High for light lasting 4 to 6 hours. Many users stated that the button is sealed really well, and the plastic ABS housing makes them waterproof and heatproof to withstand any weather conditions. You can stake these solar powered spotlights into the ground or mount them to any exterior or interior surface with the included hardware. This upgraded version has a lengthened stick to insert deeper in the ground for greater stability during the highest of winds or harshest of environments, enhanced brightness, and the solar panel and battery capacity have been enlarged. They look great in daylight and super bright at night, and customers rave about their simple assembly and easy, no-hassle installation. As with many solar spotlights, working time for this model is weather sensitive. One user warns that the switch must be turned on upon initial setup before use and another that the solar spotlights are a bit bulky. There is limited adjustability because of the non-pivoting solar panel, so positioning matters. One reviewer advises to move them around until you get the look you want. These solar outdoor lights come in a two pack and have an upgraded solar panel measuring a whopping 15.3 square inches. There are three lighting modes: Security with a motion sensor that can detect up to 26 feet within a wide 120-degree angle, Permanent On, and Smart Brightness Control. The third setting is a permanent light on in dark conditions, then it gets brighter for 15 seconds when motion is detected so it wo not bother your neighbors, and if motion continues it stays on. These features also help to conserve battery time, making the light emitted last longer. The included 2200mAh lithium ion 18650 solar rechargeable batteries power PET laminated solar panels and premium LED lights. A customer stated that the solar outdoor lights can last about 6 hours in the summer and 3 hours in the winter after an average day of charging, which can be more on full-sun days. The IP65 technology makes these sealed solar outdoor lights waterproof and heatproof to protect the whole device from the elements. Many customers liked that they can be attached anywhere. One gentleman says you can tie it to a fence, fasten them to a tree, or attach them to a deck or post. They come with sheetrock anchors and screws for easy installation in a closet or a back entrance, just follow the easy instructions for installation and placement to receive maximum sunlight. Also, a buyer cautions that the switch located on the back of the device can be inconvenient, so just make sure to choose the setting you want before permanently mounting. One customer was concerned that the lights can often go out due to cars or pedestrians with flashlights passing by them and there is no adjustment you can make on the device itself to rectify this issue. Otherwise, they were very satisfied with their purchase. Another individual states that the solar panel is always at an angle and cannot be faced straight up. Also, these lights may require additional hardware to install that is not included, like galvanized steel screws to protect from rusting. The four included outdoor solar spotlights feature 200 lumens LED lights that omit a warm white light. The light is always on, but there are two modes: Low and High. Light lasts for 6 to 10 hours after a full charge of the included lithium ion batteries. There is a dusk-to-dawn sensor, which receives environmental feedback to turn the lights off and on in times of low or high light coverage. The fully adjustable light and solar panel allow for maximum coverage and charging ability. The light angle can adjust up to 180 degrees, and the solar panel angle adjusts up to 90 degrees for optimum sun exposure. One customer was surprised how easy setup was, because you can quickly stick them in the ground using the included sturdy posts or wall mount in a few minutes with the included hardware. These outdoor solar spotlights are water resistant, heat resistant, and frost resistant. So, they are safe to use during rainstorms, snowstorms, or extreme heat and humidity, making them an ideal option for all climates. One reviewer mentioned to make sure to turn the manual on and off switch located on the back of the solar panel to the on position before installing and remarked that their lights stay lit for up to 8 to 10 hours on a normal day's charge. Another buyer remarked that the plastic used is not high quality and the lights could require additional silicone caulking to be truly waterproof. These 2-in-1 adjustable solar spotlights emit a warm welcoming light with four LEDs producing a total of 200 lumens. They come in a two-pack and have an automatic on/off sensor that will turn the lights on and off depending on the amount of light it is exposed to. The lights can be wall mounted with the included hardware or staked into the ground. A customer commented that setup was very easy - just attach the included stem to the light and insert it into the ground where you want it. After some simple repositioning, they were casting light on the areas they wanted. They are made of waterproof and heatproof ABS material to tackle any weather Mother Nature can throw at them. These solar spotlights are adjustable up to 180 degrees for the light and solar panel. Both the light and solar panel have their own easy to set vertical angle adjustments. The 2200mAh lithium-ion battery can function 6 to 9 hours after a full solar charge. There are two brightness modes: Low and High for strong and powerful bright focus, and a large solar panel for prime charging. One reviewer suggests for best results, these lights should be charged for 8 hours and must be installed in an area that receives full sunlight every day, otherwise, the battery will not fully charge and this will reduce the amount of illumination produced. Another customer voiced concern that the lights produce more of a spotlight effect, that the light path is a bit narrow and not a floodlight pattern as they would prefer. Otherwise, these solar spotlights met their needs and exceeded their expectations. Outdoor Solar spotlights typically have three main parts: a set of lithium-ion rechargeable batteries, a light housing using LED or another high quality and high output lighting source, and a solar panel to catch the sun's rays. During daylight hours, the solar panels capture the sun's energy and then stores it in the lithium-ion batteries. During the evening or when it is dark, the rechargeable batteries power the spotlights. The amount, duration, and quality of light they emit depend upon the amount of charge they can hold and the amount of sunlight they are able to be exposed to. For this reason, it is extremely important to place the outdoor solar spotlights in an area that receives maximum exposure to sunlight for optimal light production. The solar panel may be attached directly to the top of the light housing or it can be attached to the back of the light and protrude upwards and away from the lighting shroud. They come in all shapes and sizes, from spherical to rectangular and small to large for a variety of applications. Oftentimes, solar-powered spotlights can be used indoors or outdoors. Many models come equipped to be installed in the ground using a stake or pole and can also be used indoors or on the sides of buildings or other structures by mounting on a wall or other surface using screws. They also happen to use technology that makes them usable in any weather situation, from the desert heat of the southwest to the brutal winters of the northeast. They have sealed and enclosed cases to keep the elements out. Thus, solar powered spotlights require minimal effort for installation and upkeep. Many models feature automatic dimming or motion sensing characteristics. Many models we reviewed had capabilities of sensing motion up to 50 feet or more away from the installed unit, but this depends on where the lights are installed and what angle capability they possess. A good solar powered spotlight will be able to be adjusted and positioned in a variety of ways and will also have options and modes for brightness or intermittent light exposure. Outdoor Solar spotlights look professional and cost much less than a quote from a landscaper for their wired counterparts. People have reported spending thousands of dollars on entire wired landscape lighting packages, only to discover later that they could have saved money and time if they had just purchased solar powered spotlights and installed them themselves. And you do not have to pay a landscaping company or electrician for upkeep or repairs when an issue arises. An added bonus of using solar powered spotlights is that they can help save you money on electric bills. Many users describe a reasonable decrease in their use and cost of electrical services after installing solar powered spotlights. You no longer have to keep your front or back porch lights on and bother your neighbors with unwanted light coming in their windows all night. For those concerned for the greater good of mankind, these lights also lessen environmental impact by not wasting electricity. They only use what energy they have stored, and many feature an automatic on and off that allows for the lighting fixture to conserve energy when not in use during daylight hours or when intermittent lighting is present. Solar powered spotlights are virtually hassle free. Since these spotlights are wireless, this means no rodents or other animals can wreak havoc on your landscape lighting by chewing the wires - there are none! This also means you do not have to worry about underground wiring when moving objects or replanting in your garden or yard. Here is a good YouTube video that discusses how a set of solar spotlights hold up over time: What are Outdoor Solar Spotlights Used for? Solar spotlights have a variety of applications. They can be enjoyed as an accent to highlight target areas, making them an excellent decorative accent to landscaping features. You can mix warm and cool white lights to add contrast and depth to your landscaping for a dramatic or romantic feel. Use them to light up house numbers for better visibility from the street, or for the main lighting for your yard, garden, driveway, porch, walkway, pool, garage, and patio. Because of their relatively small size and compact design, they really are ideal to place anywhere you want and need light. Outdoor solar spotlights can also provide you and your family with the safety and security of sight in the darkness. Nowadays, porch pirates feel free to come on people's property and steal packages or expensive landscaping features. By using spotlights with a high lumen rating, you can deter thieves and those wishing to do others harm. You can add them to your home for an economical indoor lighting choice. They can easily be installed in closets or areas of your home that receive very little exposure to the sun or daylight. One traveler expressed his opinion that they could be used almost anywhere, as he uses outdoor solar powered spotlights as the main light source for his motorhome or RV for added visibility while camping.
LED Solar Wall Lamp|Solar Motion Sensor Light|Solar Wall Lights|LED Solar Lights|Outdoor Wall Lights
Shenzhen Geshide Technology Co., LTD is a manufacturing & trading combo, strength to the LED lighting products over 10 years. We specialized in outdoor solar wall lights, solar flame lights, working lights and flashlights. We expects to share the most professional, front-end, and most favorable solar powered system with you.Naked-Eye AstronomyHuman awareness of the universe began when people realized that they could observe objects in the sky, and that what they saw changed over days, months, and years. To any observer on the ground looking at the sky with the naked eye, the sky appears to be a vast spherical bowl, a celestial sphere that extends from all points along the horizon to the zenith, the point directly overhead. Astronomical objects seen in the sky are so far away that observers viewing them without the aid of a telescope have no intuitive sense of which objects are closer than others. This lack of depth perception causes everything to appear equidistant on the sky. Any object's position on this sphere can be determined by two coordinates, which designate the object's horizontal and vertical location. The vertical coordinate is determined by measuring an altitude angle upwards from the nearest point on the horizon, and the horizontal coordinate is established by measuring an azimuth angle from due north eastwards along the horizon to that nearest point. This system is called either the horizon coordinate system or the altazimuth system (see Figure 1). About 6,000 stars are visible to the naked eye when you can achieve the darkest conditions. The positions of the stars relative to each other remain fixed from night to night and year to year. In general, stars in the same area of the sky have no physical relationship to each other, but the very human tendency to impose order upon otherwise random distributions yields patterns of brighter stars, or constellations. Many constellations of the Northern Hemisphere have been inherited from antiquity, including Ursa Major, the Big Bear, of which the more familiar Big Dipper is part, and Orion, the hunter, which can be seen in the winter sky. Many Southern Hemisphere constellations were defined in the last century to fill in unlabeled regions of the sky. The sky is now officially divided into 88 constellations, which are used in modern astronomy for naming purposes. For example, the star alpha Ursa Majoris ( UMa) is located in the Big Bear constellation. Therefore, Ursa Majoris comes from the name of the constellation, Ursa Major, and the Greek letter indicates that it's the brightest star within that constellation. In addition to modern names, some 90 or so stars also have names from antiquity. For instance, UMa is also known as Dubhe. Over the course of the night, stars move across the sky from east to west as a consequence of Earth's rotation on its axis. The stars appear to move in circular paths around a celestial pole, or either of two points on the celestial sphere where the extensions of Earth's axis would intersect. In the Northern Hemisphere, the celestial pole is coincidentally marked by the relatively bright star alpha Ursa Minoris, also known as Polaris. Simple geometry shows that the altitude angle of the pole star above the northern horizon is equivalent to the latitude of the observer on Earth. To an observer in the Northern Hemisphere, stars that are always above the northern horizon are known as circumpolar stars; an observer in the Southern Hemisphere would see circumpolar stars around the south celestial pole. Stars that are further to the south and that rise and set sometime during the night are called equatorial stars. Equatorial stars rise in the east, move diagonally into the southern sky, achieving their highest position above the horizon on the meridian (the great circle that extends from due north on the horizon, through the zenith, to due south on the horizon). From the meridian, these stars move westward until they set below the western horizon. The celestial equator is that great circle formed on the celestial sphere by extending the plane of the Earth's equator. The equator intersects the horizon due west and due east. An immediate consequence of Earth's rotation is identifying the preferred directions of north, south, east, and west around the horizon, called cardinal directions, by which humans naturally orient themselves. Minute by minute, over the course of the night, both the altitude and azimuth of a star continually change. To more easily observe and track celestial objects, scientists have defined celestial coordinate systems that are fixed upon the sky and thus move with the stars. The equatorial coordinate system is a projection onto the sky of Earth's latitude and longitude coordinate system. Celestial latitude, known as declination, is the angular position north or south of celestial equation. Celestial longitude, measured around the celestial equation, is known as the right ascension (see Figure 2). Declination is measured in degrees, minutes of arc, and seconds of arc. Recognizing that the stars appear to move once around the sky in one day (24 hours), right ascension is measured not in degrees, but in hours, with 24 hours of right ascension (to distinguish from 24 hours of time) equal to 360 degrees. Like the stars, the Sun rises and sets every day. However, unlike the fixed motion of the stars, the Sun's daily path across the sky varies throughout the year. Twice annually, at the vernal equinox (about March 21) and the autumnal equinox (about September 21), the Sun's position coincides with the celestial equator; it rises due east, moves across the sky following the path of the equator, and sets due west (see Figure 3). At this time of year, the length of the day is the same as the length of the night. During the summer, however, the solar position is north of the equator, achieving a maximum northernmost declination of 23.5 degrees at the time of the summer solstice, around June 21. In the winter, the solar position is reversed, with the Sun at its maximum southernmost declination of -23.5 degrees at the time of winter solstice, December 21. The terms equinox and solstice mark not only specific times of the year, but also specific points in the sky. The vernal equinox is that position on the celestial equator where the Sun crosses from the southern into the northern sky. Celestial longitude (right ascension) is measured eastward around the equator from this point. The Sun's seasonal positions in the sky. Relative to the background stars, the Sun also moves about one degree eastward each day, thus encircling the sky in the course of a year. This ecliptic, or the great circle on the celestial sphere defined by the solar path, is tilted with respect to the celestial equator by 23.5 degrees. Throughout the year, the ecliptic passes through the 12 zodiacal constellations. Because the apparent solar movement is caused by Earth's motion around the Sun, the ecliptic plane is also a projection of Earth's orbit about the Sun. That Earth's rotational equatorial plane does not perfectly match its orbital plane (the ecliptic plane) about the Sun is directly responsible for the annual northsouth movement of the Sun and the consequent seasons. The length of the year is based on the time that the Sun takes to complete its annual path around the sky. During the year, the stars and constellations visible at night change as the seasons pass through their cycle. A year is, in fact, 365.25 days long. To keep the calendar in sync with the actual seasonal passage of time, every four years we have a leap year, or a year of 366 days. The additional day, February 29, makes up for the time lost annually when the 365.25 day cycle is computed as 365 days. The length of a day is based on the time it takes for the Sun to complete its daily path across the sky, from its crossing of the meridian at noon to its next crossing of the meridian the next day. Daily time based on the hourly position of the Sun in the sky, relative to its noontime position each day, is called apparent solar time. To astronomers studying the stars, however, the time of day alone is not a sufficient method for determining which stars can be observed at any given time. Astronomers need to know both the time of day and where the Sun is in the sky to find out which stars they can observe. More specifically, what is of interest to an astronomer is the sidereal time, or the right ascension of the stars that are crossing the meridian at any moment. Sidereal time and solar time are not equal because of the annual motion of the Sun across the sky. The true rotation period of Earth is 23 hours, 56 minutes, but the length of the day is four minutes longer. In one rotation of Earth, the Sun has moved roughly one degree across the sky, thus Earth has to rotate a little bit longer to get the Sun back to the same position on the sky. The solar day is 24 hours long. The actual length of any given day varies throughout the course of the year for two reasons. First, Earth's orbit around the Sun is not a circle, but an ellipse. The Sun's apparent motion across the sky therefore varies slightly, moving more than the average one degree per day in January, but a bit less than the average in July. Second, the solar motion along the ecliptic moves parallel to the celestial equator at the times of the solstices when the Sun is farthest north or south of the equator, but at the times of equinoxes, its motion is at an angle to the celestial equator. What is important for the length of the day is only that part of the solar motion parallel to the equator. This produces a second variation to the length of the day. The difference between apparent solar time (which would be shown by a sundial) and mean solar time (which would be shown by a clock or watch) is called the equation of time. This is a complicated effect involving orbital mechanics (the motion around an ellipse is not uniform), perspective (a moving object closer to the observer has a greater apparent motion), the tilt of the ecliptic to the equator (hence the daily component of solar motion across the sky varies from equinox to solstice), and a geometrical factor resulting from the fact that we are dealing with a spherical coordinate system; this latter you can demonstrate to yourself by placing your thumb on the equator of a globe. Note how much longitude angle it covers. Now place your thumb near the north pole. Your thumb will cover the same area, but as measured in longitude, it covers a much bigger longitudinal angle. And it's that angle that is important for rotation and hence the length of a day. Noon, as defined by mean solar time, can occur as much as 16 minutes late in October or 14 minutes early in February compared to the Sun's actual crossing of the meridian. Observation of the Moon shows that it not only appears to change its position by moving around Earth, but at the same time, the fraction of its surface that is illuminated by sunlight (its phase) also changes (see Figure 4). When the Moon is directly opposite the position of the Sun, it appears totally illuminated, or in full phase. When the Moon is viewed at an angle of 90 degrees from the position of the Sun, its surface appears half illuminated, or in its quarter phase. Between full and quarter Moon, the phase is said to be gibbous. If less than half the Moon is illuminated by sunlight, the phase is crescent. When the Moon is in the direction of the Sun and the side toward Earth is its dark or shadowed half, the Moon is said to be new. The cycle from new Moon waxing (increasing illumination) to first quarter to full Moon, then waning (decreasing illumination) to third quarter and back to new Moon takes 29.5 days, a period adopted as the basis of our calendrical month. The lunar phases are observed because of the changing geometrical orientation between the Sun, Moon, and Earth over the course of the lunar month, not the result of Earth casting its shadow on the Moon. The Moon takes 27.3 days to move once (360 degrees) around Earth as determined by its orbital position relative to the stars; the orbital period is therefore also an example of a sidereal period, a period measured relative to the stars. This 27.3 days can also be called a sidereal month. The time from full Moon to full Moon is longer, 29.5 days, because two motions are involved: the motion of the Moon around Earth and the motion of Earth around the Sun. To become full again, the Moon must move more than 360 degrees around Earth. The lunar month, or lunation, is thus an example of a synodic period, or a period produced as the consequence of two motions. The term synodic month is also applied to this 29.5 day period. Another example of the difference between a sidereal period and a synodic period is the rotation of Earth (23 hours, 56 minutes) and the length of a day (24 hours). The actual path across the sky of the Moon is quite complicated. The lunar orbital plane is tilted about 5 degrees 9 minutes with respect to ecliptic plane. The orientation of these two planes rotate with respect to each other over an 18.6 year period. In consequence, relative to the celestial equator, the lunar orbital plane has a variable tilt that periodically oscillates from 23.5 degrees minus 5 degrees 9 minutes equals 18.3 degrees, to 23.5 degrees plus 5 degrees 9 minutes equals 28.7 degrees. In other words, over the course of the month, the Moon can oscillate north and south across the celestial equator between declinations of as little as 18.3 degrees to as much as 28.7 degrees. Each month the path of the Moon across the sky differs slightly from its path the prior month and from its path the next month. In contrast, each year the solar path around the sky is essentially the same. Astronomers find particularly interesting the two intersection points, or nodes, between the great circles of the ecliptic plane and the lunar orbit. If the Sun and Moon in their motions about Earth move simultaneously through nodal positions, an eclipse occurs (see Figure ). If the Moon and Sun are at the same node, the Moon passes in front of the Sun and a solar eclipse results, lasting only a few minutes in duration. If the two are at opposite nodes, then the Moon passes through the shadow of the Earth and a longer duration lunar eclipse occurs. The cycle of occurrence of eclipses is quite complicated because three factors are involved. The Sun moves around the sky in 365.25 days. The Moon moves once around the sky every 27.3 days. The direction to a node (where the two orbital planes intersect) moves around the sky in 18.6 years. To get an eclipse, all three positions (Moon, Sun, and node) have to be along a straight line through Earth. This event does not happen with a simple pattern of regular time intervals. Nakedeye observers in antiquity recognized five other objects that move across the sky relative to the stars - the planets. The word planet comes from the Greek, meaning "wanderer." Planetary motion is more complicated than that of the Moon or Sun, which move systematically west to east relative to the stars. The planets' usual motion is west to east, termed direct or prograde motion. But in each synodic period, planets show a brief period of motion in the opposite or retrograde direction. Retrograde motion is the result of perspective. Consider, for example, driving on a freeway. You look forward toward a slower moving car. Relative to the distant mountains, it is clear that this car is moving in the same direction you are moving. But as you catch up to and bypass the slower car, you see it appear to be moving backwards compared to the distant horizon. As you pull ahead, once again looking back at the slower car shows it to be moving forward. Observation of other planets from Earth produces the same apparent reversal of motion relative to the background of stars. (See Figure 6).
Solar Street Light All in One 40W COB_Judn LED Solar Lights Factory | 10 Years Outdoor Solar Lightin
- Powered by solar enerty, rechargeable via sunshine, energy efficient and environmentally friendly.- Built-in light sensor, automatically light up with 30% brightness at dusk, turn off at dawn.- Built-in PIR motion sensor, regulates light automatically with 100% brightness when motion detected 30s delay time, the lamp will lasts for about 30 seconds when motion ceased, then turn to dim light.- Waterproof IP65 shell, made of high-impact ABS which can withstand snow, rain and other weather conditions.How to make my Piebald 'Gypsy' Cobs legs white?Wash the white bits the night before in Diamond Bright shampoo diluted down in warm water (just cause it's nicer for the pony) and leave on for about 10 minutes. Then rinse off and towel dry. Then rub on chalk and leave to dry overnight. For the tail, mane and forelock just do the same, but comb through lots and lots of conditioner before hand and then comb through the chalk. Cover your pony up with a rug up to their neck and bandages and make sure that their bed is spotless. Then pray that they do not roll in muck over night and keep a large bottle of Cowboy magic and a very clean sponge on hand for the green spots that will appear. Enjoy your showrepost on critique / cobs ability?If I had even 0.5 the drawing skills you have, i may be a happy individual. In a word, superb. yet another word, spectacular. the domicile feels like my dream domicile. to respond to your question, you have important league drawing understanding. Very dog ate two corn cobs?I dont know, My dog eats anything. Underwear to actual crisp packets and hes fine, i know its not good for him but some dogs have more stamina then othersAre Bernie supporters stockpiling corn cobs, since socialism leads to poverty and no toilet paper they may want to have something?Most libs will want to insert that corn cob lengthwiseCassie Cobs v.s. Jessica Simpson?Who is Cassie Cobs? Jessica could fit on the Simpsons show, she would not even need to be animated, she would fit right in. She got an ugly mouth and nose.What is the name of the Mango filled Korean cakes shaped like small corn on the cobs?They were sold in the Samgachi station at the Seven Eleven. I do not know the name of them either, but they were delicious. Sorry I cannot help with the name but I hope this helps someone else to help you.Are corn on a cobs at the grocery stores ok to eat? Is all corn GMO?If it doesn't say sweet corn or GMO-Free, why: there's an excellent chance it has GMOs. Some sweet corn has it too, however. This is mostly of yellow and white corn. I know that Blue Corn, like they put in some tortilla chips, is hard to get GMO'd. Yeah, about everybody here is talking about 'genetically altered' from a long time ago. Sure, I think grapefruit and almonds are 2 that have changed the most. Anyways, that's not what 'we're' talking aboutAre corn on a cobs at the grocery stores ok to eat? Is all corn GMO?Are corn on a cobs at the grocery stores ok to eat, do all corn have GMOs?Where to get dried Corn Cobs...for burning.?Dried Corn CobsMy dog is always nibbling (corn cobbing) my other dog. Has anyone seen this before? Do you know what it is?its just them grooming each otherhow can i distill corn cobs using materials found at home to extract ethanol?pls reply asap..tnx!!?You will blow yourself up if you are not careful. Distilling something requires a "still",the same thing that moonshiners use to make their brewWhat's the most nutritious way to eat corn other than fresh whole cobs?boil it in water. It's absolutely delicious. you can also drink the water you boil it in. enjoy!Is it true that people in the Roman Empire used corn cobs before toilet papers were invented?As corn cobs were not introduced in Europe until the Americas were "discovered" in the 1490s, then no, it is not true. The Roman Empire had been long gone by then
5 Reasons Why the People Are Thankful to LED Solar Lights
With fossil fuels rapidly depleting, and oil about to last for another half a century, humans are constantly engaged in finding an answer to the world's energy problem. The answer came to us in the form of LED Solar LightsSolar energy when bundled with the most energy-efficient lighting technology on the planet, LEDs, produce stunning results. Registering a 130% growth in the last three years, solar energy has gone from 177 GW capacity in 2014 to 402 GW in 2017. This figure shows that the technology is being adopted rapidly across the globe.Let us look at why Solar LED lights are such a promising prospectSolar LED lights do not cause pollution: Because of the fact that the energy in solar LED lights, is produced not by burning fossil fuels, there is zero pollution when we use solar lights.Zero Utility bills: Since the power generated by solar LED lights is not drawn from the grid but is produced by solar panels, the user has to pay no electricity bills on the power consumed.Long life: Solar panels last for 25 years and LEDs last for more than 6 years, this means that you will have to worry about replacing neither your LED light nor your solar panels.Solar LED Light are recyclable: At the end of a solar panel's life after 25 years, it need not be burned and metals and minerals can be extracted from it. This means that even after the end of their life cycle solar panels do not cause pollution.More solar energy means fewer fossil fuels: The more we use solar energy for our electricity needs, the more we ensure that fewer fossil fuels will be burned to produce electricity.Solar LED lights mean uninterrupted power: Solar LED lights are not dependent on power grids for energy supply, this translated to uninterrupted power supply immune to power failures, etc.Potability: Solar panels come with a battery that can store the energy generated during the day time. This means that this energy can be transported to any place where it is needed.Electricity for remote areas: Solar energy especially plays an important role in providing electricity to rural areas where grid power has failed to reach yet.These are just a few good reasons why one should make the switch to Solar LED Lights to not just save your utility bills but also to help in fighting global warming.·RELATED QUESTIONI didn't get Google Glass Explorer Edition. Is trying to learn Glass dev without the hardware a futile effort?No, you can still learn the fundamentals of Glass development without the hardware.There are three main approaches for accomplishing this:1) Visit the Mirror API documentation, get into the playground, and start hashing up some code. Download the PHP, Java, and Python library, whichever you're most comfortable with. Familiarize yourself with the jargon and converntions (timeline, bundles, menus, etc). Read the support documentation (second link below) to see how the Glass hardware actually functions. Build some apps to this specification. Soon enough, you will find a friend with hardware to t
Solar Street Light Market Is Growing Globally
The solar street light industry is growing exponentially with governments and organizations across the country and the globe offering incentives for solar installation. In the United States over 200 city mayors and city managers have committed to going 100% renewable by 2030. This growth is also being fueled by the increasing cost of traditional fossil fuels such as coal and natural gas power plants while renewables are going down. Renewables just surpassed fossil fuels for the first time ever last month. The government of India is planning to replace 35,000,000 street lights and almost 800,000,000 incandescent light bulbs with LED lights.Solar installers say cost per kw-hr is total charge/kw-hr from elect. co., but why would elect co agree to free use of their grid?The electric company is probably already charging you a connection fee and for the average household, that fee should not depend if you receive, send power, or how much power you use. (It is a little more complex then that) But that will not prevent them from trying to maximize profits while they still can.What improvements are needed to make pv Solar Installations better?Snow is a much more difficult problem. An inch of snow overnight pretty much trashes power output until it melts off or is swept off. Right now, my solution is a ladder and a long-handled squeegee. A better way would be appreciated. ----how can I find an pv solar installer to get some experience?hi, i would use and find companys in your area and ask them if you could do some free days with them to gain experience. Im sure they would not mindHow many kW can an average village in India run off of? (Iu2019m looking to do solar installations.)Respectfully Quora is not the place to ask a question like this. You and you alone should be answering this question. The fact that you don't know the answer means that your education in the field of solar energy is woefully lacking. An organization called SEI or Solar Energy International, based in Paonia, Colorado, USA has many online solar programs and some of it is tailored to the developing world. Google them to get their website and I highly recommend their courses. Most of my formal education in solar is with them. How many kW can an average village in India run off of? (I'm looking to do solar installations.)10 tips on how to choose solar panels company - Guangdong Prostar NewFinding a great solar panels company to install your solar panels can be intimidating. Follow these tips to help make the right choice. There are a lot of solar companies out there. How do you choose? If you've read our Solar Panels Installation Manual from the start, you've made sure your is house energy efficient. You know more than you ever thought you would about the electric grid and the carbon footprint of solar panels versus fossil fuel power plants. You've done the math and figure that you are going to save thousands of dollars over the next two decades if you install solar. And you know how you are going to pay for it all. People get a little nervous about picking a solar installer because solar technology is still unfamiliar to a lot of people. Pretty much every homeowner has had to call a plumber at some point, but solar... that's something most people have never dealt with. How do make sure that you find the best contractor? In many ways, hiring a solar contractor is much the same as hiring a contractor to do any home project. Do not be intimidated by the technical nature of solar: if you do some due diligence and ask the right questions, you will be fine. This guide will help. Now what? How do you choose the best solar installer? Here's the tips that will help guide you to a good decision: Get in the right mindset We do not want to scare you or anything, but just be aware that buying solar is more complicated than. But it's also less work than remodeling your kitchen. So be prepared to do some work, but it's really not that bad. Just go into it with the right frame of mind. You are hiring a contractor. You will need to carefully review a contract and make a couple decisions, but not nearly as many decisions as if you were redoing your bathroom or kitchen. On the other hand, there are some companies out there that want make the home solar buying process a little bit like picking a flight or a hotel. We think that this is bad for the consumer for a number of reasons. First of all, this approach emphasizes price over other important considerations. It's okay to just go with cheapest option if you are , say, renting a car for the weekend - one company's Toyota Corolla is the same as a Corolla from any other. But solar panels are a product that are going to last you 25-30 years. Workers are going to come to your house and bolt a lot of equipment to your roof. It's a major purchase, so it's important to really understand the details of the product before you make such an important decision. Second, it encourages people to gloss over the important details of the equipment that you are buying. You might be prone to do this because solar can involve an intimidating number of technical aspects like watts, voltage, AC/DC, efficiency ratings, electric meters and monitoring systems. But, we promise, you do not need an engineering degree to figure this stuff out. So do not just make your decision on price. Consider the quality of the contractor and the contract details. Imagine that you want to do a big home renovation. You are going to make your dream kitchen! It's going to look just like the magazines. So you come up with a wish list of things that you want to have: shiny stainless appliances, granite countertops, a big island, wine fridge, that sort of thing. Oh, because you've got an older home where everything is a little bit crooked, you want the contractor to tear everything down to the studs and also install a new floor. Then you come across a website that promises to give you an accurate quote for all of this, just by filling out a form. No phone calls. No contractor will even come to your home to take a look around. Would you trust a quote like that? No, obviously not. If you are doing a kitchen remodel, a competent contractor needs to make a site visit so they can identify problem areas that will cause labor or materials costs to go up. Are there structural aspects to the space that will make the work more difficult? Is there electrical or plumbing work that needs to be upgraded? Is there a chance that your floor tiles have asbestos? All of these things would cause your estimate to go up, but none of them can be identified without a person coming to your home. Problems that cause solar costs to go up Solar panels and racking are heavy and last for decades, so a good contractor will need to evaluate the condition of your roof. Is the roofing material and decking in good condition? Do you have roof drainage issues that need to be addressed first? What is the size of your current electric service panel, and will it handle the additional load? Do wiring or circuit breakers need to be upgraded? Do you have landscaping that will cause shading problems after a few years' growth? Nobody on the internet can promise an accurate quote for your solar project if they do not come to your home to assess these kinds of things. A lot of people do not like sales calls. That's understandable. But for a project like a solar installation, you have to make an exception. In this case, you are going to get a phone call, and somebody is going to come to your house. This is a good thing. Get more than one quote Just like with your dream kitchen project, you need to get multiple quotes. This is not only to get a fair price, but also to compare the different materials, warranties, and credentials of the companies that you are evaluating. For example, one of the most important details of a solar installation is how the racking is secured to the roof and waterproofed. Ask the contractor exactly what methods and materials will be used. What is the fastening system, and what flashing and sealants are used to waterproof it? Or, maybe one installer insists that microinverters are the only way to go, while another contractor says that they would use string inverters for the project. In that sort of situation, you need to be prepared to ask each contractor why they selected one type of equipment over another. Never select a company only on price Everybody likes to save money, but do not save money on your solar photovoltaic system by simply going with the cheapest quote. There are real differences in equipment and installation quality . While it's very possible that your best installer will also be the cheapest, you can not know until you closely evalulate the details of the contract and materials. Conversely, going with the most expensive installer does not guarantee higher quality either. The biggest solar panels company installers, usually do not want to sell you a solar system. Instead, they tend to push you to rent one instead using financial products such as solar leases and power purchase agreements (PPAs). These financial products result in higher profits for them, and a lower financial return for you. There are a number of reasons why these financial products are often bad for consumers, but one of the key reasons is the inclusion of escalator clauses that automatically increase your cost of electricity every year, even if the utility company holds their prices flat. In addition, many of these large national installers have poor reviews and have even faced lawsuits by state governments. Prefer local companies that have been in business for a long time When you get a quote, we prefer local solar panels company that have been in business for a long time and have a strong presence in the community. Quite often, these are electrical companies that have decades of experience that have added solar installation to their portfolio. One reason is the obvious fact that a company does not stay in business for decades if they do lousy work. But the most important reason is that in order for a contractor to honor their labor warranty with you, they need to still be in business. The labor warranty, which is separate from a manufacturer's warranty, could be 5 to 10 years long, and even more with a few companies. With the explosive growth of residential solar across the country, a lot of new companies have sprung up overnight, especially in states like California. A company that has been in business for only a couple years might do great work, but running a company profitably for decades is a different skill than installing solar panels. Your best chance of having a company be around to service your system years from now is to pick one with a long track record. Be wary of brand new solar companies that have been in business for only a couple years. If you are independently doing research on solar installer companies, be selective about the review sites that you use. You will find sites, including ones that specialize in reviewing solar installers, that allow companies to appear as featured companies in their listings in exchange for a fee. This is a controversial practice , one we think that is misleading to the consumer. Which sites should you trust? Start with the, which contains both reviews and a platform where consumers can file complaints with the Better Business Bureau, and companies are able to respond. Google Local Business is another site we think is reliable and does not offer paid placement. A few years ago, Yelp was accused of extortion , but the class action that followed was dismissed, and we think the company answered the controversy reasonably. Fake reviews are a different issue, and one that is more difficult to address. For this reason, we recommend you start with BBB, which uses human reviewers to check submissions. Check that your contractor is licensed The first thing to do is understand what type of license is required by solar installers in your state. The Interstate Renewable Energy Council maintains a website that lists what is required. Be aware that licensing for solar photovoltaic (PV) may differ from the requirements for solar thermal (which is used for hot water heating), so read carefully. Once you know what the requirements are, you can ask your contractor for their license so that you can look it up at your state's licensing board. California and Nevada, for example, make these databases searchable online, and also tell you how long the license has been active and whether the contractor is bonded. Check online to see what your state provides. Many companies list their license number right on their website, so you can do this check in just a few minutes. Never work with a company that is not properly licensed. There are many different components in a photovoltaic system, and each is covered by a different warranty from their manufacturer. It's crucial that the installer fully explain each one. The solar panels company should provide a warranty of the workmanship and components of the system, and cover the labor and replacement costs of any failing components. Photovoltaic panels have their own warranty, and often this is specified in two parts: one warranty covering materials and workmanship, and another warranty period covering their power output. Solar panels normally degrade over time, producing a little less power each year. (This degradation should be less than 1% per year.) The panel warranty will certify that it will continue to produce a given percentage of the original power output after a number of years. A 25 year power warranty is typical, and the product warranty should be at least 10 years and is sometimes long as 25. The inverter system is a critical part of the system, and will have its own warranty period. 10 to 25 years is typical. The racking system needs to hold up to potentially extreme weather for a couple decades. You want to make sure it has a strong warranty - at least 20 years. Are you getting batteries? It's a pricey component, so be sure you know what the warranty is. Meet your solar panels company contractor in person and ask a lot of questions We mentioned already that you should always have a face-to-face with your potential solar installer, right? Once you have an actual human person in front of you, that's the time to ask some important questions. Sometimes, the first person you meet with wo not be technical and can not answer all your questions on the spot. They might need to consult with other people on their team. That's okay. Just be sure that all your questions are clearly answered before you sign a contract. If you have not already checked that the installer has the proper licensing for your state, now is the time to do so. Also ask if their installers are NABCEP certified. What incentives are available? Use our calculator to find out about major incentives, but your solar installer may know about other local rebates. Be sure to understand if the owner receives the credits, or if the installer does and passes them onto the customer. Confirm if net metering is available to you, and make sure that you clearly understand how it works. (You can read our article What is net metering? for a primer. The estimate should list the price of individual components and labor: modules, inverters, racking, labor, electrical work, and other costs should be itemized. The contract should indicate exactly when payment is due, and what the payment schedule is (if any). You will receive a site plan that visually indicates the layout of the system components on your home, which includes the placement of the panels, inverters, disconnect switch, and meter. The installer will give you an electricity production estimate for the system in a year with average weather. Compare this with your average usage, and make sure that you are happy with the system output. Ask about labor and component warranties. Discuss the details of the solar panels, inverters, and racking system. Systems that are tied into the grid will require approval from the utility company, and possibly an inspection. Ask about the requirements and timeline of these. Your local code may require an engineering structural inspection before work begins, and an electrical inspection after work is completed. Ask what is required and when in the project timeline they occur. Your interconnected pv system will most likely require that your utility company install either a new bidirectional meter, or a second meter alongside your existing one. There may be a fee charged for this. Be sure to ask. Find out how you will monitor the system output. This will either be a display on the inverter, or a website or smartphone app. Ask if there is recommended system maintenance. If your roof needs repair, find out labor charges for removing and reinstalling the hardware. For component failures that happen after the installer's warranty, ask about the process for making a manufacturer warranty claim and having the component replaced. What are the different types of Uninterruptible Power Supply (UPS)?
All in One Solar Street Light
Shenzhen Juho Lighting Co.,Ltd has been engaged in developing, manufacturing, selling and serving of all in one integrated solar LED street lights for more than 7 years, our engineers have been working in this industry for more than 10 years, we have experienced workers in our factory, our factory strictly execute the ISO9001:2008 quality management system; besides , we have several all in one integrated solar LED street lighting molds ourselves, thus can ensure us offer the most stable and durable all in one solar LED street light at cheap price.what are some cheap prices on dog clothing?the cheapest i have found is $4. but i think its cruel to dress up animals, its not natural, they already have fur that does the job!where can i buy good makeup for cheap prices?!?elf has decent makeup for cheap which you can find at Target Wet N wild, jessies girl, loreal and so are also decent makeup you can find at Rite aid, ulta NYX is also a good brand for cheap which you can find at Ulta, Amusewho wants to buy tropies on millsberry for cheap prices??I sell severe style rings at solid expenses yet i think of the perfect thank you to get a ton of rings is to host a jewellery instruct at your domicile and get unfastened rings. I provide my hostesses 30% of their comprehensive revenues in unfastened rings, and as much as $a hundred in bonuses. My hostess bypass away with like $3 hundred in unfastened rings at an difficulty-unfastened occasion. basically a theory.In English, to express the word FOR SOME THING WITH A cheap price, SHOULD I USE cheap or economy? ?Inexpensive Economic Low-price(d) Check a thesaurus.I need chair cover to rent for my wedding in September "cheap pricing"?Chair covers are not cheap. You will easily drop several hundred dollars at a thrift place. (Cheapest I could find them in a quick search was 2.50 per cover, not including the sash)What Are Good Websites To Buy Cd's On For Cheap Prices?amazon has many good cdb-sidestore, is the site legit? cheap prices?The site is 8 months old and already claims to be one of the biggest? There are 9,135,753 sites that get more traffic. They are currently #9,135,754. Still running Christmas specials. Do you believe in Santa Claus? How about the Tooth Fairy? DonWhere can I buy good quality cosmetics for cheap prices in the Internet?Go to , they have great quality stuff for vary like like $1 $3 $5 depending on what u want its really nice, and they also have cupon codes so u can get like free shipping and stuff its awesome you should go check it out :)Does anybody know a good place to buy bling jewelry for cheap prices?topshop have loads of stuff like that, google it :]where can i find a good engagement ring for a cheap price?I do not know what websites to suggest but I think maybe you should go to different malls or shopping outlets where jewelery stores are @ and compare pricesWeb sites that i could buy stuff for cheap prices?Depends on what form of commercial mannequin. If you are promoting as a reseller, you would must purchase matters in bulk volume and inventory them up in both your apartment or a few warehouse. Then you will be able to dispense them both by way of a internet site portal with retailer carts that you just setup or public sale websites comparable to like Ebay and even Craigslist. Other procedure is to create an ecommerce web page and promote merchandise that you just do not want stockup, however have corporations drop send to the purchasers for you, wherein case your important process will probably be to promote merchandise simplest with out stocking them. Remember, there also are obligation tax you've got be involved approximately for those who import them from foreign like China or Europe. There are many websites available in the market as a way to promote you matters for low-priced, however you do must do a little thorough study and fully grasp the marketplace earlier than you bounce into shopping whatever to resell. It is extremely encouraged that you just discover a area of interest product and grasp that designated marketplace, and discover out the whole lot you will be able to approximately it in order that you are ready for the busines wrestle available in the market
How Often Do You Think About Your Lights Or Your Air Conditioner, Unless Its Broken?
My guess is not very often.Leaving an unused device “on” when leaving a room does not strike one as much as leaving water taps open.And so we waste a lot of energy and money, while a bit of care and attention could change a lot.I was convinced that at WWF we also need to do more about our energy impact, and walk the talk, and wanted to ignite this change.I worked over 10 years on energy policy for WWF, but I wanted some practice. Thanks to an MSc in Wales at CAT and solar work experience at Hassler Energia I acquired more hands-on, practical knowledge needed for this new challenge.Now I am looking for ways to make our offices more energy efficient, and to switch our energy supply to solar.Fifteen WWF offices across the world are already running on solar energy and I’ve seen the energy consumption drop drastically in all offices where we trained staff and made some technical changes, like replacing inefficient air conditioners. It works!But I couldn’t have done this without my colleagues.While they are concerned with other environmental issues in their day to day work, they are still enthusiastic to learn more about their impact and reduce their energy consumption.Switch off the plug — switch on the sun: Energy policy into practiceThis week it is WWF EPO’s turn!We have launched a Sustainable Energy Week, a chance for everyone to learn and share how to make energy changes that matter and to become more familiar with the solar installation on our roof and smappee.This cute device enables everybody to easily check at any time how much electricity we use and solar electricity we produce.Everyone in the office can do it, techie or not.When do you start? You might be surprised what a difference it makes.Jean-Philippe Denruyter is the manager for Applied Energy Solutions at WWF. He is based in Belgium. jdenruyter@wwf.euLearn more about WWF’s work on solar energy.·RELATED QUESTIONWhy don't hotel rooms have ceiling lights?My hotel building is over 100 years old, so we have ceiling lights. We also need a ladder to change a bulb 11' from the floor. It can take 20 minutes for 1 bulb! This is one reason that we have changed to the longer lasting (and more economical) low-energy bulbs.I would be delighted to have wall lights instead. Retro-fitting them would however be even less economically sound.Higher than average ceilings mean ladders to change the bulbs in ceiling fittings, and this extends the maintenance time and convenience for staff enormously. Even normal height ceilings mean that a chair is needed to swap a bulb out. Wall fittings are so much more convenient for both staff and customers, reducing the time taken to get light again!As Michael Forrest Jones says - anything other than a simple bulb swap requires the power to be cut to the whole circuit (which may be more than just a few rooms). This makes it very awkward to do emergency repairs after dark! -- Been there done that... Go with wall fittings that can be isolated in-room!In short:I have ceiling lights.I don't like them, as they are awkward for maintenance.Replacing them would be expensive and extremely difficult - basically a total rewire of the hotel lighting system.Design engineers are not stupid. they note the first 2 points!
How to Fix the Solar Street Light?
A, 1, battery solar street lights maintenance common fault. If light time is short, the battery energy storage, cause the rainy weather, light time is short, that is the problem of battery, should replace the battery. 2 LED light source. Light bead insufficiency on solar street lamps, in addition to the quality problem of the LED light source itself, is the welding problem, should be timely change of no lights or the lights bead weld or more directly replace lamp holder. The installation place. Install solar street lights, solar illumination is insufficient, can not give battery energy storage is also a big problem. Should find this place system, solar street lamps lighting requirements. 4 line problem. Wiring, battery feed, energy storage, will cause the lights flashing. 5 the whole light not on what is to be the problem? First, check whether the controller is water, if not the controller problem, in the test battery voltage, the voltage is less than 10. 8 v, if not, then look at whether there is voltage panels, if there is no voltage is in panels. , solar street lights maintenance two solutions possible failure parts would not light: LED light source, solar controller, battery, solar panel solution: 1, first check the lamps and lanterns of terminal is loose. 2, remove the LED light source, and received a battery or lamp is working correctly on the vehicle with DC12v power supply only, and pay attention to is the cathode, explanation is the LED light not on fault, need to change the LED light, the light controller or the battery failure. 3, measurement of battery power, if less than 11 v, the controller in protection status, the lamp on a full charge before use. If the above 11 v, the controller failure, need to replace the controller. solar led street light work short time possible failure parts: solar controller, solar panel solution: 1, solar controller Settings is wrong, please set professional knowledge. 2, there is some dirt on solar panels, cleaning dust, and make it provide power generation efficiency. 3, wet weather more than 3 days, returned to normal after it's sunny. LED lamp brightness is not may fault components: lamps, LED lighting solutions: 1, cleaning the chimney, to make it clean. If you have other solar street lamps fault should ask professional personage to check repair! maintenance three, note 1, solar controller whether water 2, if there is a current 3 panels, battery voltage is higher than 10. 8 v, outdoor lighting, founded in 2006, the existing reached more than 100 production personnel, technical personnel 8, 3 senior engineers and management staff 15, plant area 1. 50000 square meters, professional development and production of solar street lights, scenery complementary street light, the integration of solar street light, solar garden light , solar lawn lamp, solar panels, photovoltaic power generation systems and other products, with light pole as a whole production line, paint line, LED lamps and lanterns assembly lines, solar panels as a whole production line, electronic production line. Annual output of 260000 solar street lamps, other solar lighting lamps and lanterns of more than 50000 lamps.The , essentially perfected by custom made solar light s, is one of the first home appliance to be widely distributed.To know more about solar light, please check our website at SRS Solar Street Light This is crucial when you need to maintain innovative information in solar light.1. How Much Does All-in-One Solar Street Light Costs?Looking into buying an All-in-One Solar Street Light this 2020, but you have no idea how much it would cost you? If yes, you've landed on the right page! A lot of us easily get excited with a new technology, but when faced with a higher investment cost, we tend to back away. For one, solar street lights have gotten a lot of attention, but not many people wanted to use them in the past. Some of the reasons were: higher cost, unreliability and difficulty to harness the sun's energy. In recent years however, with so much improvement in solar street light battery, LED lighting technology, built and capabilities, there's no reason to back out. In this article, we've covered the typical cost of high-quality All-in-One street light from different manufacturers in different countries. We've also demonstrated how much it costs compared with traditional street lights. At the end of this article, you will have an idea which solar LED street light to choose for your application. Generally, the price of a solar street light will depend on its power rating, quality and brand of its components, solar panel quality, LED lamp efficiency, and pole material. When you are looking for a reliable manufacturer who offers mid to high-end quality, have a look at the specifications. Mid-range to high-end street lights are usually the best options as you will get your money's worth. So you should limit your options within this range. For starters, see that the integrated solar street lights have LED lamps for illumination with a lighting efficiency of 150lm/watt and above. LED solar street lights are not only more efficient than CFL street lights, but are also more cost-effective. They also hold a promising future as they are projected to decrease in cost and increase in efficiency as seen in the graph below. This means that whenever you would need to replace the LED of the solar powered street light (an average of 12 to 15 years assuming that you use it for 12 hours a day), you would save a lot more in the future than when you buy CFL street lights. Below, we have listed the typical specifications of high-quality All-in-One solar street lights with their typical price range. These all-in-one solar LED lights have mounting heights ranging from 3m to 6m and are good for solar garden lighting, lawn lighting, pavements, etc. These all-in-one solar LED lights have mounting heights that ranges from 4m to 7m. They are perfect for local roads, small roads, event lighting and commercial lighting with road widths of 5 to 10 meters. These all-in-one solar LED lights have mounting heights that ranges from 6m to 10m and are good for local roads, small roads, event lighting and commercial lighting with 8m to 14m road width. These all-in-one solar lights have mounting height ranging from 10m to 12m and are suitable for main roads with road width of 20m to 23m. These all-in-one solar lights have mounting heights ranging from 11m to 13m and are ideal for main roads and highways with road width of 24m to 30m. Cost to manufacture the product and labor rates for each country would also influence the unit price of a solar street light. Here, we've covered the price range depending on the country where the all-in-one solar light is manufactured. In India, you can find that solar LED street light price can range from Rs. 12000 to Rs. 50,000 ($168.39 to $700) for 9W to 60W power rating. Places to look for with reliable manufacturers: Bangladesh, Ahmedabad, Mumbai, Pune, Delhi, Gujarat In China, you can find integrated solar street light price ranging from $50 to $800. Best places in China to find a reliable All-in-One Solar LED light manufacturer: Zhongsan, Shenzhen, Shanghai, Yangzhou In the USA, solar street light prices range from $1,000 to $5,000. Best places to find solar street light manufacturers in the USA: California, Florida, Michigan and Texas. Best Smart Solar Street Light Companies in UK: Dragons Breath Solar, Solar Street Lighting, The Solar Range How Much Does All-in-One Solar Street Light Cost to Run? Or rather, how much will you be saving when you run a solar street light compared with a traditional street light? Here we have compared the total cost of ownership for an All-in-one solar street light system and a traditional street light in both the US and the UK. Cost to Run an All-in One Solar Street Light in the US in a Span of 10 Years Cost to Run an All-in-One Solar Street Light in the UK in a Span of 10 Years Although the upfront cost is much higher for solar street lights, it is evidently more promising. With no trenching and electricity required, integrated solar street light installations are far less easier and faster. This also highlights how much money you can save. When it comes to its initial price, All-in-One Solar Street Lights come with hefty price tags regardless of what country you will buy it. But it's evidently clear that China and India offers low-priced solar street lights compared to US and UK manufacturers Also, in the factual demonstration above between traditional street lights and solar street lights, it's clear that you can potentially save about $2,800-$7,720 in a span of 10 years. Not to mention, save the environment from harmful carbon emissions when you use all-in-one solar street lights. Question is, how much more can you potentially save when you import All-in-One solar street lights from India or China with the same quality, but far lesser cost? This will only require you to look for a reliable supplier in other countries and to help you with that, we've covered articles on the top solar LED manufacturers in India and in China.2. Construction/Installation of 12 Nos. solar street light, Ukwalla CommunityUkwalla is a very poor community in Anambra West LGA, and made up of 4 villages with estimated population of about 20,000. The community is faced with major challenges of lack of power supply and lack of portable water which often leads to incessant cholera outbreak in the community. 12 Nos solar street lights were constructed and installed in different strategic points in the community Presence of the new Solar lights is expected to enhance security of lives and properties as well as increased economic activities in the community.3. The Ultimate Guide To Solar Street Lighting | Recovered Energy TechnologiesOur innovations, our research programs and the quality of our offers have made possible the installation of over 12,000 solar streetlights around the world. Sunna Design is the only company in the solar street of lighting industry to have invested so much in making its products reliable, with a lifetime of up to 12 years without requiring any maintenance. We have also focused in making our products easy to install and easy to check remotely, thanks to their connectivity
120w Solar Street Light 20watt Led Solar Street Light. Features
12 best solar street lights reviewed and rated in 2020 02/12/2020 the Solar street light manufacturers led solar street light is the best solar led street light for many users worldwide, and for reasons. the top of the line solar powered lights are energy efficient and solid in performance. if you re looking to improve lighting in the patio or solar led street lights set, 20w w/ 50w solar panel, ip67 rated, 6000 kelvin, commercial solar street lights in one of the most attractive lighting product designs and superior quality, the solar led street light set consists of a battery, the solar panel, the microwave controller or sensor and the lighting lamp itself when all the other three are in built inside the lamp. truelite solar carport light is adapted from our most successful 4g led street light built on the same platform is an answer to a vast solar lighting applications in urban and rural living. truelite solar carport has inbuilt lithium battery and charge controller integrated with high power led source makes the light a unique weather proof lighting fixture with the advantage of solar. waterproof solar led street light motion sensor . 60w/90w. feature all in one design and charged by solar, so the lighting kits are completely wireless and easy to be mounted.widely arrange mount applications on wall, fence, tree, steps, etc. to light up your garden, hallway, flowerbeds, pillar, deck, yard, patio, or driveway and any other places. 6,687 120w led street lighting products are offered for sale by suppliers on alibaba , of which street lights accounts for 84 , solar light accounts for 29 , and garden lights accounts for 3 . a wide variety of 120w led street lighting options are available to you, there are 6,686 suppliers who sells 120w led street lighting on alibaba luxman provides both integrated and split types of solar street lights. the street light with solar panel 100 powered by the sun, this robust stand alone solution is designed for a sustainable future in both residential areas and urban areas, i.e. garden, pathway, garage, park, landscape, campus, commercial, residential, street, etc. designed for simple installation as a single integrated unit, capsells solar lights are proudly assembled in the usa. using the latest led technology, our powerful solar lights come in different lumen options (1,500 16,000 lumen), capable of illuminating large areas like streets, parking lots, commercial spaces, walkways, pathways, parks, and other spaces. shenzhen jinsdon lighting technology co., ltd. established in 2010. shenzhen jinsdon lighting technology co., ltd is dedicated to solar photovoltaic products, own developed solar charger controllers, own designed solar street lights and own assembled lifepo4 battery pack under professional engineers teams, with own technology and software. best solar street light smart solar street lamps review 2020. a lot of the solar street lights suppliers show these type street lights 20w 40w 60w in the package. the real led power from small to big is 2.5w 5w and 9w lighting time 8 10 hours (because led power is very very small.) price range $8 $25 life span more than 50 broken in 1 year market advice the solar lights components of 08/10/2019 the bestqool led street light is a 20 watt led light that is affordable and efficient. this solar street light runs on an 8000mah battery that can last over 10 hours on bright mode and 35 hours when dimmed. besides, it takes only 8 hours to get the battery fully charged. also, it has two sensors which are the light sensor and the motion sensor.Why did HBO scrap the Naomi Watts led Game of Thrones prequel series?If my guilty-pleasure blind gossip is accurate, it looks like an all-around reverse circle jerk: One Expensive Mistake - BLIND GOSSIPWriters blaming the director, director blaming Naomi Watts, producers blaming the writers. It just comes off like it did not gel or come together properly. If it was that bad ("tremendously disappointing pilot"), it's probably for the best that it's not going forward. I would rather it die in the cradle than we get a bunch of hype and trailers and set pics and on and on and then it premieres and it's a disaster
Garden Lighting Is a Necessity
Aside from making your yard look pretty, garden lighting serves several very important functional purposes as well. Here are a few of them to get you started. Lighting up your garden is not something that falls under a luxurious hobby that people only indulge in to impress the neighbors and friends. Garden lighting is basically a necessity more than a fashionable hobby or a passion. Imagine how inconvenient and boring it can get to organize a graduation party that you need to wind up before the sun goes down, only because you garden is not properly lit. Forget about parties, can you even stroll in your garden in a breezy summer night without lighting, or sip on a strong espresso to enjoy winters in a dark garden? Without lighting, your garden can look dreary and instead of giving respite, it will scare you. Garden lighting is immensely useful in a number of different ways. The first, being its use in allaying your fear to stroll in a dark, and gloomy garden. Then properly lit garden can encourage you to arrange different family and friends dinner parties and late-night get-togethers. This will eventually help you enjoy more with your near and dear ones and collect some memories along the way that you will love cherishing throughout your life. Other than this, the garden lighting can actually lease a new life to your dark and dreary garden, provided they are installed at the right locations. Creating a wonderful atmosphere in your garden does not imply that you need to install big bright bulbs all around. Bright and sharp lights can only serve to irritate your guests as well as neighbors, but will never provide a soothing atmosphere, a beautiful evening party demands. There are a number of different types and designs of garden lights available in the market. Before going for shopping, see if there are separate portions in your garden for sitting and cooking, etc or not. If yes, then you may need to provide extra lighting to that area rather than using the same dim lights as in the rest of the garden area. Afterwards, you should know that the most usual type of garden lighting is the down lighting that can be used anywhere in the garden. Nevertheless, if you have a pond or fountain in your garden as well, you should always think about installing the underwater or spotlights. In addition, you need to highlight the walkways and sidewalks, as it gives further definition to your garden.However, whatever type of lights you use, make sure they are soft and low-voltage lights. Prices of garden lighting vary widely; nevertheless, it is not expensive at all. To get an even more cheap deal , you can use solar lights. They are available in various attractive designs.
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