Kemeco's Best Solar Pole Lights

2021-07-26
Kemeco
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best solar pole lights highly promoted by Kemeco Lighting has done a great job in managing the trade-off between the practicality and visual appeal. It is noted for its multiple uses and its refined look. Its highly homogeneous surface and fine appearance make it a star design in the whole industry. More importantly, it is its enhanced functionality and ease of use that make it widely accepted.We have been promoting our Kemeco and have earned a good reputation in the market. We have spent a lot of time building a solid social media presence, automating the posts on the platform, which is time-saving for us. We have researched SEO strategies related to our products or services and formulated marketing development and promotion plan, which helps increase brand awareness.At Kemeco Lighting, we offer our customers who are inclined to do business with us samples for testing and consideration, which will definitely remove their doubts about the quality and performance of best solar pole lights.
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Tips for Choosing the Best Integrated Solar Street Light
Tips for Choosing the Best Integrated Solar Street Light
Of course, you should pay attention to LED lights and choose waterproof ones. On days when there is less sunlight to power the panels, these options will help the light continue to illuminate your property. Depending on your needs and the location chosen for the lighting, you can choose from the various models currently available on the market. These lamps give you the freedom to choose exactly where you want to install them, even on a veranda or patio.One of the reasons for this recommendation is simply because LED lights are simply the best. You will also have a brighter light for the same amount of energy that you have always used. If you're looking for where to find the best LED lights, DEL Lighting is your trusted source.Of course, as a type of outdoor lighting when buying all-in-one solar street lights, as usual, you need to carefully understand its power, IP rating, installation methods and other features. If you are an individual looking for the best solar powered street lighting products for your garden, you should obviously focus on quality, durability and price. Therefore, in this article, we have provided you with an in-depth solar street light buying guide so that you can choose the best solar street light according to your preferences and needs. For this reason, we have put together this detailed buying guide that explains what features to look out for when choosing the right solar lighting device for you.The flagship solar range is energy efficient and reliable. Since these solar-powered street lights can already illuminate a large area, you can illuminate dark outdoor spaces while saving more on electricity. One of the main reasons we're sure you'll love these lights is because they help you save energy.You can save up to 80% energy by adjusting the brightness right. You can adjust the brightness to 30%, 60% or 100% with the supplied remote control. This design makes sunlight more efficient because solar panels can be independently adjusted at different angles to maximize exposure to sunlight.It then turns on the light automatically, so you don't need to worry about manually controlling it. Likewise, a motion sensor detects movement and turns on the light when someone moves on its radar, and turns off when that person is not there. Motion-sensing lighting usually saves energy by staying dim until motion is detected.These lamps are extremely bright and are very suitable for illuminating open spaces such as basketball courts, large terraces, streets or arenas. The dual-head LED light can provide stable illumination for six to eight hours after being fully charged. These LED bulbs can be brighter than ordinary bulbs.Compared to other models, you can rely on these flashlights with high capacity lithium iron phosphate batteries. These solar lights will automatically turn on at night and automatically turn off and charge at sunrise. These features mean that built-in solar lights can be quickly and easily installed with just two or three people, without the need for cranes or special equipment. While versatile solar street lights are equipped with energy-efficient motion sensors that promise safety, built-in lights charge faster with relatively large solar panels and work with a dimming option that helps save energy.Buyers looking for powerful solar powered street lighting may find this one of the best options for their needs. So, if you want solar lighting alternatives that can provide sufficient brightness wherever you install them, this seems like one of the best options you can count on. If you're looking for modern wireless technology to illuminate your garden, yard, or other outdoor space, then you should definitely try sunlight.You must trust us when shopping for solar powered streetlights because we have a systematic approach to highlighting the factors to think about when you try to compare your options and analyze the products we presented earlier. We've simplified everything in this buyer's guide, making sure you understand what features to watch.By choosing the right one, you can be sure you are using the right lighting solution you need for places such as parking lots, roads, walkways, outdoor areas, civil and military security areas and more. To help you choose the one that suits your needs, review the following information. It is extremely important to do your homework and discuss it with professionals so that they can help you choose the best one.This is why you should do your homework and consult a technician or professional so that they can give you good advice to help you make a decision and choose the best advice. The reason you need to be careful when buying solar panels is because there are too many solar panel companies out there and you need to choose the best solar panel company. Not only are there too many brands and products, but they are also different in terms of functions, specifications, power, and prices. However, commercial users, companies, factories, and even communities and cities must pay attention to durability, quality, customized applications, and customer service so that they can benefit from durable LED street lights and get the most out of their investment (ROI) income.More importantly, solar power can enable the rapid deployment of streetlights in rural areas (including those located off-grid) and help bring safety to cities and suburbs and economic growth across the country. Besides powering homes and offices with photovoltaic modules, solar energy is also effective as an outdoor lighting solution. The best solar-powered streetlights will be powered by monocrystalline panels capable of generating electricity even in low light conditions, and will automatically dim their lights in small increments as the power source runs out to ensure that the streets are well lit anyway. all night long. If you'd like to learn more about the science of solar lighting, check out our infographic here or download our complete guide to solar lighting performance.Properly sized sunlight means the system has enough solar energy, battery capacity and LED device efficiency to operate at the required light level every night for several years, while providing long-term backup power in unpredictable weather conditions and without adding unnecessary solar panels. or batteries. The maintenance of each lamp is also more or less the same, while the energy consumption is $ 0 with a solar panel (stand-alone light) and around $ 1400 for a standard lamp. In terms of pricing, a cost comparison for standard versus solar lights in the US found that while the average solar LED street light costs $ 3,000 and a standard light fixture costs $ 1,500, the cost of installing a single solar light is much cheaper. Thus, the type of battery used in universal solar street lights is also important information when choosing bulbs. When choosing versatile solar street lighting, you can't just focus on price.
What Are Problems When Using Solar Street Light with Sensor?
The economic development has made our city construction work more emboldened, and more advanced equipment can be used.Solar street light with sensor have entered our line of view in this context. It has been widely used in many large cities in China. As an energy-saving product that can effectively save energy and protect the environment, we want to make solar street light with sensor better for us,extend its life services.In actual use, also need to pay more attention to these issues.The first is the heat dissipation problem. We all know that solar street light with sensor are generally led light source, so its service life is very long and if you want to improve its service life for a longer time, it is necessary to increase the heat dissipation and constant current of the led lamp.Work harder,effective heat dissipation can help control the temperature of the led tube.The second is the anti-theft problem.Because solar street light with sensor need to be equipped with solar cells and solar panels,this has become the target of theft of criminals. Therefore, in order to be able to use normally, it will not affect the night lighting. During construction, it is necessary to pay attention to effective anti-theft, and the battery can be buried. Under the pedestal of the solar street light with sensor,the cement is poured on it, so that the solar battery can be effectively prevented from being stolen, the economic loss is reduced,and the normal lighting work is not affected. In addition,solar street light with sensor can use lithium battery,the lithium battery has one-third of the weight of the same-power lead-acid gel battery and one-third of the volume. It is even more difficult to be stolen by installing it inside a pole, inside a bracket.The third is to choose the right solar street light with sensor controller. Although the controller is very inconspicuous in the entire solar street light with sensor system, its quality will directly affect the life of the entire street lamp system and the cost of use, so be sure to choose a controller with excellent quality during construction.As a typical example of green lighting equipment, the use of solar street light with sensor is very beneficial to our country and the masses. If you want to fully utilize its long-life advantages, you must add more in construction and pay attention in actual use.Optical sensors or magnetic sensors for position control?Optical sensors can be very precise, but they will also be pricey maybe ($75-300) Magnetic sensors can be are accurate as far as on/ off, they are also going to be much cheaper ($20-50) Both types of sensors can be tampered with if that is something you are worrying about but the optical will be harder to tamper the single.2001elantra,loss of power,especially on up grades.?you have replaced a few items that would do this. however we need a diagnostic check to see fault codes. using these we can have a better chance of a solution. for example coil pack, plugs,crank sensor wo not do that. map sensor and TP sensor may.. do that. as its sudden cut back and reapplication of power we need to look at ecu inputs. this would seem to be an electrical issue such as loose wire on a connector. accelerating gently up and down by itself is more of an actuator issue. again diagnostic check with a competent technician is best way to get decent fix.Bad oxygen sensor? or catalytic converter?a low catalyst efficiency very rarely points to a failing cat or o2 sensor. the fact that it does not get hot enough to work right can be the issue. look for a vacuum leak on that bank or an exhaust leak on that side. either one could lead to that.Serial sensors and the YunI do not have any experience with the Yun so I can not comment on that specifically, but the only problem you will encounter with using SoftwareSerial is that you can only communicate with one device at a time.This means you will have to make a call to listen()before communicating with sensor1. Then when you want to communicate with another sensor, you have to do the same.
Improve Your Outdoors with Solar Outdoor Lights
No matter if it be for a outdoor party or to illuminate that patio, driveway or your backyard, outdoor lighting is becoming more and more popular in our present day living.Effective outdoor lighting is important in metropolitan areas and also our homes and gardens. These days you can find so many to choose from it may be overwhelming and complicated to make a decision which one would be best for your requirements.You can find solar lights which have been made especially for the outside. These lights can exist through extreme weather conditions. There are also solar lights that feature vandal-proof panels. The actual fact that most of these are automatic also adds to their effectiveness. This means that they are low maintenance as there will be no need to switch them off, and they should also outlast conventional ones.Such solar and low voltage lights are ideal for outdoor accent lighting. They can easily be set up on walls, poles or even staked straight to the ground. Before purchasing any exterior lights home owners would also have to think about the predominating style they want to get. To provide an example, another fixtures in the patio or the backyard would also have an impact on the best style of solar light to be used.Garden lights continue to be the best for plants and flowers in your garden beds. Homeowners who are interested in gardening would be thrilled that they can showcase their garden at night. Every part of their effort can be worth it especially when they entertain guests at night.You could decide on the low voltage outdoor lighting they generally create stronger light than solar powered lights. Low voltage lights do need electrical power wire underground, although they will offer you a reduced amount of overhead expenses than your inefficient electric mains lights. Low voltage light systems only use 12v current, the same as indoor low voltage lights.Nearly all home owners can without difficulty setup a low voltage lighting automatic system as these are not dangerous and straightforward to install. With a electric low voltage system that includes a power pack which allows you to manage times that the lights turn on or off. For the most part transformers might need a programmable timer that can be set for 4,6 or 8 hours. Some will in basic terms turn lights on at night and off in the daytime.Outside solar lights can remodel your backyard and outdoors by creating distinctive lighting effects and moods, transforming your backyard into a stunning warm and calming place to have the benefit of.
Solar Flood Lights | KCD SOLAR-Solar Lights & LED Light Manufacturer & Supplier
SinoStar Lighting is a professional lighting manufacturer and factory of solar flood lights in China. Our solar flood lights feature the following:• Built only with world-famous LED chips, like original Philips Lumileds, BridgeLux• 5 years warranty with EV class batteries, like Panasonic, BYD, etc.• At an unbelievable and unbeatable price guaranteed!Our solar flood lights are built only with the highest quality materials and components, we are a leading solar flood lights manufacturer and exporters from China. We are now looking for worldwide distributors to work with us for a long-term mutual profitable business relationship.Please contact us now for a real-time video chat on WeChat or Whatsapp for a factory tour and you will get free samples for testing and evaluation, we believe you will love our company and our solar floodlights.Here is a short video of Solar Flood Lights, for more information, please check the detailed series of solar floodlights.How to Select the Best Parking Lot Light Pole? - FAQ and GuideIf you own a parking lot or are planning on turning a plot of land into one then there are many factors you must consider into it. Such as who you should pay to pave the plot of land, where you should source the materials from etc. However, one of the most important things to consider when owning a parking lot is what light poles you should use. A lot of factors go into choosing what light pole is the best suited for your or your companies parking lot, and in this article, we will guide you through all the factors and help you choose your perfect light pole. How to select the best parking lot light pole? Before getting further into the factors you should first of all figure out all the dimensions and properties of your parking lot. Factors such as how large your parking lot is will be important when choosing what light pole you should get. You should also check what your budget is and how much money you are willing to spend on electric, as well as how much people actually use your parking lot at night. If you are struggling to find places to buy a parking lot light pole then we have a few suggestions for you. Specialist companies will not only provide you with the light pole but also install it for you. However, parking lot light poles can be found on many more mainstream websites. Second hand and even new light poles can be found on eBay however you wo not get the same level of professional customer support and installation as you would by getting it from a specialist website. Now we've got the basics of figuring out the dimensions of your car park as well as where to buy a parking lot light pole from, let's get into what you came here for, what factors do I need to consider before buying a parking lot light pole? When browsing through light poles you will generally notice a trend. Most light poles are either constructed from aluminum, steel or concrete, Obviously, there are huge advantages and disadvantages for every one of those materials, so let's get into the pros and cons of them. Advantages: The main advantage of a steel pole is its low cost and decent lifespan. It also allows for flexibility with the circuits and is ultimately a strong and durable material. Disadvantages: The disadvantages of a steel pole rest mainly with everything else constructed out of steel. It will rust and corrode, which means it needs to be under maintenance a lot, which is bad if you are trying to keep the costs of actually running the parking lot down. Advantages: The concrete poles advantages rest mainly where the steel poles shortcomings are. The concrete light pole has a massively long life span of 50 years, is an extremely strong material and requires extremely low maintenance since it does not corrode or rust. Disadvantages: The concrete pole is difficult to install and transport. It is also in general much costlier than a steel pole and is not recyclable, it also does not look too stylish. Advantages: Does not weigh a lot, is corrosion resistance, low maintenance, can be transported easily, looks nice and has a similar life span to the concrete pole (50 years) Disadvantages: Has limited mounting heights and ultimately is not as strong as the steel pole. See also: Steel vs aluminum light pole When choosing a light pole that is suitable for your parking lot then you should definitely consider what height your light pole needs to be. Considering the height is important because you want to make the most out of your light pole, and so you will want it to cover a large enough area while providing sufficient light to the users of your parking lot. If your parking lot is small then you might only need a few 9 feet light poles, which should be sufficient enough to provide adequate light to the parking lots users. However, if you own a medium to the massive parking lot then you will want the light poles to be around 11-14 feet tall so they can provide adequate light to a number of the spaces in the parking lot. When choosing the light pole, you should use you must definitely consider the weight of the lighting fixtures itself on to it. Having light poles that can not handle the lighting fixtures you put on them is a bit counter-intuitive. This is where the factor of the material the light pole has used comes into play, as a concrete pole could definitely handle more weight from the lighting fixture than a steel pole. Fortunately, most websites of light poles will tell you the maximum weight they can handle, however, we would definitely recommend you order the pole based around the lighting fixture rather than vice versa, The base of your light pole is also an extremely important factor. The bases of light poles tend to be constructed out of metals (Steel etc.) and so are prone to corrosion and rusting, which in turn means you may need to have some form of maintenance even if you do get a concrete pole. The base needs to, of course, be able to support and adapt your light pole so that it works without a problem. If you get a light pole that does not fit in a certain base that you have bought then that could mean you wasted a lot of money over something a lot of people overlook. So, before even considering materials etc definitely consider what base you are going to use and then get a pole that can actually work with your base. These factors are often of less importance but should be considered nonetheless. Diameter Light Pole The surface of the Parking Lot Direct Mount or Pole Voltage requirements Special Features it could include. Thank you for reading our article and we hope we informed you about all the factors you should consider before buying a light pole for your parking lot. Then, let's take a look at the frequently asked questions. 1. What is the common parking lot light pole height? The height of the right light pole depends on the category of light that one chooses for a particular region. Every region may have its specific set of desires, such as limitations on the locations light poles can get positioned and how much space one wants to shield with each light established on the pole sites. Moreover, the capacity to put many lights on a single pole can aid with coverage region, and the height at which the lights get connected also affects the coverage region. Numerous counties can list a maximum acceptable height for light poles, and thus should be taken into contemplation before the project phase. 2. What will happen if the pole is too short or too tall in the parking lot? The region of the parking lot can naturally decide the height of the light pole. In firmly inhabited regions, shorter poles can certify that brightness does not become the matter. Still, more light poles can be required to offer decent coverage, particularly when associated with rural locations, where taller and scarcer poles can attain the same consistency without the concern of brightness due to less public communication. Additionally, mounting height for parking lot lights can array from 12 ft. to 20 ft. But in some circumstances, its mounting height can extend as high as 35 ft. 3. How much does it cost to install a parking lot light pole? The cost of the LED light is exclusive than halogen or high-pressure sodium. However, the reason is that LED light has a much-extended lifespan duration of 80,000 hours, which is 8 to 10 intervals greater than MH or other HID. Additionally, the expected cost of a highway light pole is US$2000 to US$3000. Still, with electrician cost to put in highway light to installation is up to $1000! If the plan is for the highway or bridge, the entire cost can increase by 20% extra. 4. How often do we need to repair the parking lot pole? The question of how often does one needs to repair the parking lot pole solely depends on several aspects. For instance, the burned-out pole light bulb is a common cause for fixing the parking lot pole. Additionally, if one notices a pole light that's precipitously not functioning, a burned-out bulb is the whole collective issue, and this, therefore, requires a speedy emergency. Besides, if the pole lights are scorching out frequently, it is acclaimed to deliberate upgrading the light bulb to LED light bulbs, which have an extended lifespan and need less care. Nonetheless, burned out ballast is yet an additional reason for repair. Pole light ballasts get used to the observer and control the quantity of electrical current rolling through the light bulb. Over time, the ballast depreciates due to regular wear and tear and desires to get changed. Also, to comment is the damaged capacitor. Nonetheless, the capacitor in the pole light gets used to supply electrical charges and blocks straight current while permitting sporadic flow to pass through the viable light pole - furthermore, that aids in alleviating energy and power movement. Signs of a damaged capacitor comprise a light bulb that twinkles regularly. As soon as it gets observed that the pole lights are blinking, then it is crucial to deliberate repair. Furthermore, the spoiled photocells are yet another reason for repair. When it gets observed that the light poles are flickering or turning on aimlessly during the day, this could be due to a spoiled photocell. Photocells watch how much light is current, and photocells aid to keep pole lights off throughout the day and to turn the lights on at night. Substituting a spoiled photocell is vital and should be done by a qualified electrician. Also, one needs to repair the parking lot pole if the pole light is spoiled. Hurricane period and summer rainstorms can cause harm to the viable property, including the loss to the pole light fittings. 5. What is the difference between an ordinary light pole and a decorative light pole for a parking lot? Ordinary light pole is commonly the cheapest choice. One can even treasure used or rejected telephone poles in the native area to use as light poles for the projects if one wants to save the budget down. Furthermore, the ordinary light pole needs the electrical wiring that turns about the outside of the pole, which means that one also wants to do more exertion to waterproof the electrical structure. While one may save on the light pole, one has to recall that it may cost more to run all the wiring up the pole and protect the pole from rain and inside electrical code. On the other hand, the decorative light pole gets recognized for being multipurpose and pawn, but decorative light is less secure. Also, the decorative light pole inclines to be more exclusive but are much more waterproof. 6. Which light type is better of the parking lot, LED, or halogen? Why? LED parking lot lights are much healthier for pageant cases than halogen lights for several explanations. The utmost important factor unraveling the two pageant choices is heat production. Halogen lights use about 90% of the energy-giving off temperature, making LED lights a possible fire threat near flammable materials. With such great temperatures, halogen lights can be hazardous, and source burns if affected. The LED discharges an ordinary 10% of the energy in temperature, making LED lights much additional energy-efficient and calm to the touch. On the other hand, Halogen lights are much cheaper to secure, but the lifetime of the LED light is about 25-50 intervals extended. Extended-term consumers of LED's can bar money on the number of substitutes that need to be acquired. Customers can also save prices on power consumption. A standard LED light uses 8 watts of power, whereas halogen lights average approximately 90 watts. 7. How many lumens do I need inside the parking lot? The lumens acclaimed inside the parking lot are two LED Parking Lot Light heads of 20,000 lumens both at around 15-20 feet tall on both poles. However, the space of the pole needs to be approximately 20 feet separately. That is standard lighting. Furthermore, if one goes for up to 30 feet and do two light heads at 30,000 or 40,000 both, one can space the poles 30-40 feet separately. Finally, there are so several variables in lighting that one has to choose whether suitable or bright is necessary.
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.U.S.-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.
Integrated Solar Street Light Led Outdoor Garden Light New Rural
We are the factory main for solar panels, on-grid and off-grid solar systems, and solar street lights in China since 2014. We have a factory building of 10,000 square meters for the production line for fully automatic assembly of solar panels and a factory building of 2,000 square meters for the assembly of solar systems and solar lights. Designed with an integrated motion sensor, this outdoor solar powered security light can be mounted easily onto the side of a wall or secured to a 2 in. - 3 in. pole. Constructed of rustproof rigid resin and designed with SMARTLOCK technology, this LED Solar Security Light will illuminate up to 150 cycles per night for 60-second intervals when Semi 2 in 1 80W Solar Street Lights 1. Integration design, easy to carry, put solar panel, LED lamp, battery and controller all in one, do not need any cable 2. Rural Garden Outdoor Solar Integrated Energy Lamp 30w Led Street Light , Find Complete Details about Rural Garden Outdoor Solar Integrated Energy Lamp 30w Led Street Light,30w Led Street Light,Solar Led Street Light,Energy Led Street Light from Street Lights Supplier or Manufacturer-Hebei Enjo Light Technology Co., Ltd. * All the key solar lights components such as the battery, charge controllers, solar panel, and led are from the big company.And we sign annual warranty contracts with the suppliers to make sure the material quality from the source. So we strictly comply with the guarantee that we promise to the customer. The battery we used passes the MSDS, UN38.3.The solar cell is Jinco grade A. * All the key solar lights components such as the battery, charge controllers, solar panel, and led are from the big company.And we sign annual warranty contracts with the suppliers to make sure the material quality from the source. So we strictly comply with the guarantee that we promise to the customer. The battery we used passes the MSDS, UN38.3.The solar cell is Jinco grade A. solar powered street lights 12 best solar street lights. best solar powered street lights. well, there is a wide number of solar powered street lights on the market. we would like to introduce you to some popular models that are suitable for your gardens, pathways, and courtyards. so it would be easy for you to find the coolest solar outdoor light to illuminate your outdoor spaces.How much would alchohol cost at a wedding?If you purchase the alchohol yourself around $1200-$1500. If you will spend at the bar $4500 Get married in Las Vegas!!! WWW. SILVERBELLSCHAPEL.COM The Silver Bells Wedding Chapel, is perfect for your Las Vegas Wedding. Just outside of the Las Vegas strip, Located within the Artisan Hotel. The hotel features dim ambience throughout the entire hotel which features a gorgeous indoor chapel and outdoor garden which would be perfect for your Las Vegas Wedding. These two locations are one of the best in Las Vegas. Unlike most chapels in Las Vegas the photos previewed here is what our venue really looks like. No overly hyped editing, to ensure that you get your perfect Las Vegas wedding. Providing you the best Las Vegas wedding is our main goal. We can also customize packages to fit your needs. Our well organized professional staff will help you save time and hassles for preparing for your Las Vegas Wedding. WWW.SILVERBELLSCHAPEL.COMShould chickens be fenced off from outdoor gardens?The day I plant seeds and seedlings, I lock the chickens out of the garden. Otherwise they will scratch it all up looking for bugs, making dirt baths, and ripping apart the seedling's leaves.However, once the plants have some decent size on them I usually let them in for a few hours just before the sun sets. That way they get to go bug hunting for a bit, eat a few leaves here and there, and then put themselves back in the coop before they do much damage.I always seem to have one though, who makes it her life's mission to peck holes in every single piece of red fruit she can find, be it strawberries, tomatoes, or friggin habanero peppers. Actually she will eat the whole habanero, crazy bird.What time of year should you begin planting seeds indoors for outdoor gardens?You should read the package on how long it takes to germinate and be ready for planting. I would say Illinois is about the same for Boston in that the earliest date is around the middle of May. You can then count backwards to see when it's time to start the seeds for the plants you want. You could try giving them some bottom heat and sit back and watch them grow
Ideas on What to Do with My Back Yard Living Space?
Target has some hanging basket hangers that are black iron on clearance right now. Get a few of those and attatch to house, fence, or pergola to add interest with hanging solar lights, hang flower baskets, or hanging candle holders. It does not matter what kind of patio furniture you have, it could be plastic for all I know, but dress up those chairs with clearanced cushions (or make your own) and throw an outdoor table cloth with color! Potted plants in glazed pots, that you can get inexpensively from Mexico, with some grasses like Liriope, something hanging like an ivy or potato vine (Ipomoea batatas), and some color like sunflowers or hydrangea will give great color and will define the space a little more. Make sure these glazed pots are about 3 feet high. Lastly get some lights from IKEA that you can string across and that will lend a festive atmosphere that is also inexpensive, because you plug them in only when you have an outdoor event.1. Best Overall 5 Brightest Solar Spot Lights For Your Outdoor SpaceThinking about adding solar spotlights to your yard? Not only are they great for lighting up your front driveway but they can be used for your patio, garden, or anywhere else you require a little (or a lot) of extra light. We are going to take a look at the five brightest solar spotlights for your outdoor space available in 2020. All of these spotlights are easy to install and eco-friendly. Plus, they are waterproof, easy to take care of, and add aesthetic appeal to any space. Here's the best overall 5 brightest solar spot lights for your outdoor space. These solar spotlights by LITOM are not only incredibly bright with High Light mode but they are also really versatile. These 12 LED solar lights come with the option of installation by way of a stake in the ground or by being mounted on a wall. The LITOM Solar Landscape Spotlights are unique in the way that they contain 12 LED bulbs with 50 lumens per bulb for a combined total output of 600 lumens per light. Although they do not include a motion sensor, they can still detect whether it's day or not, changing the light settings accordingly. Automatically adjusts according to day or night Lighting time is 12 hours on Low Light Mode, 6 hours on High Light Mode Charging time is 4 to 5 hours under full sunlight If you are looking for a bright solar light system that doubles as additional security for your home, the DrawGreen Solar Motion Sensor Light is a fantastic option. This is an extremely popular model among homeowners because of all the features it provides. One of the reasons it's so popular is its exceptional durability. This solar light contains an incredibly strong aluminum alloy shell that can last between three and five years. The DrawGreen Solar Motion Sensor Light has a motion sensor optic grade PMMA lens that lights up a 40 to 55 ft surrounding area. The motion sensor detects movement from up to 26 feet away, an ideal security feature for any home. Light saving feature that automatically turns off during the day and on when it detects low or dim lighting Detects movement from 26 feet away with a 120 angle range Charging time is 6 to 8 hours under direct sunlight If you are looking for super bright solar spotlights that also change color, the ROSHWEY Outdoor Solar Spot Lights present a fantastic option. These solar spotlights are popular not only for their unique features but for their easy-to-fit design - you do not need to be an experienced installer to fit these lights. The ROSHWEY Outdoor Solar Spot Lights are fitted with 18 high-brightness LED bulbs and include a whopping nine different lighting modes. These lights are highly waterproof, too, with an IP65 rating. Arguably the best feature of the ROSHWEY Outdoor Solar Spot Lights, though, is that they change seven different colors if you feel like adding a bit of whimsy to your yard. Up to 18% conversion rate of solar energy Looking for bright solar lights that are versatile and essentially flawless? Let's just say the JSOT 18 LED Solar Spot Lights are probably for you. These LED solar lights provide a dual-head design with 18 high-brightness 2835 LED beads in each light. This creates an illumination distance of up to 33 feet with a light output of up to 1000 lumens. While these lights do not have a motion sensor, they do contain a High Light Mode and Low Light Mode that automatically change to suit the time of day when they sense a change in lighting. The JSOT 18 LED Solar Spot Lights also come with multiple accessories that allow you to insert your flagpole solar spotlights into the ground or to easily fix them on the wall. 2 lighting modes of High Light Mode and Low Light Mode that adjust to the time of day Charging time of 4 to 6 hours under full sunlight Adjustable joints, the solar panel can be rotated a full 360 without joint adjustment Looking for something a little different than our previous options? If you are looking for the ultimate in both brightness and high tech, this solar flood light by YQL could be an excellent option for you. Although a floodlight is generally thought of as the kind of streetlight that came on when it was time to go home when we were little, they can be used in a variety of ways, like lighting up basketball courts, patios, lawns and, of course, your driveway. This solar flood light contains an auto on/off dusk-to-dawn timer with a remote control so you never have to worry about switching the light on yourself - it does it for you. Plus, with a 40-foot remote control distance, you do not need to worry about where you are while you are making adjustments. Should I invest in solar spot lights for my outdoor space? Yes! Solar lights are practical, functional, and easy on the environment. It's important to keep in mind that solar spotlights do require charging time which takes much longer if direct sunlight is not available. That said, if you are looking to take a step towards becoming more eco-friendly, we definitely recommend any of these.2. How do you recharge the rechargeable batteries in solar lights?It is possible to do this but you have to see the time controlling3. Why do my solar Lights turn off in the middle of the night instead of when its dawn?It's possible the batteries are not being charged sufficiently. Make sure you follow the directions you got with the lights. I know mine had to be charged for a certain amount of time before they would hold a good charge. Make sure you have removed any plastic filament that may be on the panels. It may be blocking some of the suns rays. Just a guess. Things I would look for.
My Solar Garden Lights Don't Work Anymore. How Can I Restore Them?
Fit new rechargeable batteries, the ones they usually come with are of a low standard, but it can be cheaper to buy new lights, as the cost of the batteries can be more than the units are worth!!1. deciphering growing lights specificsThe important factors are the light spectrum and the lumens , not the watts. I have found more information for aquarium light products than garden lights . A metal halide ( not halogen ) with a 5000 C temperature rating would be good but use a lot of power ; available in wattage from 150 to 500 and maybe more.2. My Solar Garden lights keep getting stolen?So you've spent how much on these lights so far? Here is what I would do. Buy this light for $29.00 (see link). it's a little motion sensor light. put it on a small post or someplace where if some one who walks up will set it off. It may scare the kids off. I am not saying it will work but you can try it. otherwise I've seen a motion sensor lawn sprinkler for gardens. Rabbits, squirrel etc. You would have to check around on that one.3. How to kill wasps that've built a nest INSIDE my sealed solar garden lights?once you progression the nest it many times dies anyhow. it incredibly is not something greater effective than a brood chamber for the queen wasp and something of the wasps are her infertile daughters. the employees do not lay eggs themselves. Use the spray and be careful to not get stung4. How to tell if solar garden lights are working?-You would better ask your Friend who owns the Place. His solar lights not Working may not have ANYTHING to Do- with You. :)5. 10 of the prettiest solar garden lights from under £25Many of us have been updating our patios and getting ready to fire up the BBQ to invite our friends and family over as we enter spring and summer. The next step is to turn your balcony or outdoor space into a wonderland of pretty fairy lights with eco-friendly solar lights to illuminate and warm up your garden. The low-maintenance lighting is perfect for enhancing the ambience outside and it can brighten and complement the smallest of outdoor spaces. Here are some of our favourite lights below...6. How do I keep rabbits from chewing electrical cords on my garden lights?Try the dog hair. Go to local salon and ask for hair from the floor7. Does anyone have any advice on how to start a small indoor garden...Such as lights to use, soil, how to water.?I bought some "Earth Boxes", check out the web site, they are pretty cool and easy to maintain. I use miracle grow for soil. They need sun so put it by a window at least or you can drag them out on sunny days. You fill the bottom of the box with water twice a week and they use what they need.8. Does anyone have any advice on how to start a small indoor garden...Such as lights to use, soil, how to water.?you ought to do a sprint analysis on which vegetation stay to tell the tale in low easy circumstances. i comprehend bamboo is one in all them. you additionally can purchase improve lighting fixtures for the vegetation interior the corridor way out of your interior sight homestead & backyard save9. Broke one of my neighbors outdoor garden lights, how do I cover it up?Switch it over with one of the other garden lights, so they do not figure out the basketball did it, if there was one further away. (I was a teenager once).10. My solar garden lights don't work anymore. how can i restore them?You can also check the tiny bulb, it may have burned out11. How do solar garden lights work?You are correct. You also should be aware that a crappy soldering job is a sign it is a crappy light12. Solar garden lights, how do I choose and install the right one?Elroy, what you need to do is to read some reviews my friend. The best places are amazon and some other independent websites. Look for 5 start products and you can'y go wrong.
Led Solar Street Light Circuit Diagram System Design Pdf
Circuit diagram of the solar garden light is shown in Fig. 1. It is built around a solar lamp controller IC CL0116 (IC1), a miniature solar cell, a bright white LED (LED1) and a few other components. Fig. 1: Circuit diagram of solar garden light. This circuit requires only a single Ni-Cd rechargeable battery to light up the white LED for more than five hours depending upon the ampere-hour (Ahi need to find out whether my figs have sugar coated on them?The label ingredients list would have to include sugar. Most likely if it says natural, there's no sugar coating. They are naturally a little gooeyWhat can you do with dried figs?Fabulous Fig Bread Categories: Breads, Low-cal Yield: 22 slices 1 c Dried Figs, ground 1 c -Boiling water 3/4 c Pistachios 1 1/2 c All-purpose flour 1 ts Baking soda 1/4 ts Salt 4 tb Margarine or butter 1 c Sugar 3 tb Egg substitute; -OR- 1 -Egg 1 ts Vanilla In a medium-sized heat-proof bowl, combine the figs and pistachios, add boiling water and let cool to room temperature, about 1 hour. Position a rack in the center of the oven and preheat to 350 F. Grease an 8-1/2" by 4-1/2" loaf pan. In medium sized bowl, combine the flour, baking soda and salt. In a large bowl, beat the butter until fluffy. Gradually beat in the sugar. Add the egg and vanilla and beat for 1 to 2 minutes, or until lightened. Add the dry ingredients and beat until just blended. With a spoon, blend in the fig mixture. Turn into the prepared pan and bake 1 to 1 1/4 hours, or until the bread just begins to pull away from the sides of the pan, and the top springs back when lightly touched. Cool in pan on a rack for 15 minutes, and then turn out and cool completely. Wrap in plastic and store overnight before serving. Cut into thin slices. Yield: One 8-1/2" x 4-1/2" loaf - 22 slices Each serving contains approximately: Calories 124, Fat 3.39 g, Dietary Fiber 2.22 g, Carbohydrates 22.4 g, Protein 2.38 g, Sodium 94.8 mg, Cholesterol .026 mg Calories from protein: 7% Calories from carbohydrates: 69% Calories from fats: 24%wat can i do with figs?I do not give a fig about figs! No, really I've only eaten them in Fig Newtons and they were okay, have not tried a fig in its natural formwhen is the best time to prune a fig tree?Is it indoors or out? Just finished a class in pruning. Dead branches are pruned at any time. Actual remedial pruning is done when the plant is dormant. Outdoors, this is in January and February. Indoors, when the plant appears to be dormant...no further growth or leaf pruductionWhat does kate Chopin's "Ripe Figs" mean?This Site Might Help You. RE: What does kate Chopin's "Ripe Figs" mean? I do not have to write an essay about the story, I need to write a short sequel, moving the story from fall to spring. In order to to that, I want to know what Kate Chopin was trying to get across when she wrote it. I have a feeling it's has something to do with age and patience, but why does...if i ate dried figs all day?that is a alot of fiber lolEdible unclonable functionsFigure 1 shows that the photoluminescent properties of fluorescent silk proteins are used to realize multiple challenge-response pairs in an edible PUF platform with heightened security for on-dose authentication and anti-counterfeiting of medicines. Importantly, challenge-response pairs differentiate our protein-based PUFs from other common unique objects and tags29,63. In reaction to optical challenges, defined by a unique set of excitation and emission bands of different fluorescent proteins, the edible PUF made of silk protein (i.e., fibroin) and fluorescent proteins generates distinct output responses, which are used to extract digitized keys (Fig. 1a). The source of entropy is randomly distributed fluorescent silk microparticles seamlessly embedded in a covert thin transparent silk film. First, we take advantage of four different fluorescent proteins (i.e., eCFP, eGFP, eYFP, and mKate2) that have specific excitation and emission peaks in the visible wavelength range (Supplementary Table 1). Specifically, we utilize fluorescent protein-expressed silk produced by transgenic silkworms as recombinant proteins via the piggyBac transposase method (Supplementary Methods and Supplementary Fig. 1a). Silk proteins are an excellent biopolymer to be genetically hybridized with fluorescent protein genes46,55,57,59. Second, to fabricate fluorescent silk microparticles (Supplementary Fig. 2), fluorescent silk fibroin is regenerated into an aqueous solution with a low-temperature process, is freeze-dried, and is gently ground into zeolite-shaped microparticles with sizes of 99.3 7.9 m (mean standard deviation) (Fig. 2a, b and Supplementary Fig. 3). Third, an admixture of the fluorescent silk microparticles is broadcast on a large flat surface and a white silk fibroin solution is poured on top. After an ambient drying process in the dark, this thin transparent silk film with a thickness of 150 m is punched into 7 7 mm2 squares, resulting in all protein-based edible PUF devices (Methods and Supplementary Figs. 2 and 4). eCFP, eGFP, eYFP, and mKate2 silk cocoons possess bluish, greenish, yellowish, and reddish colors under white light illumination (Supplementary Fig. 1b). However, after the regeneration of the fluorescent silk, each type of fluorescent silk microparticles are not distinguishable in the naked eye, while maintaining their fluorescent properties (Fig. 2 and Supplementary Fig. 5). This fabrication process is scalable for mass production without using any sophisticated equipment and is safe for oral consumption without any organic solvents or synthetic polymers (e.g., methanol, ethanol, isopropanol, or polyvinyl alcohol) (Methods and Supplementary Fig. 6a). Analyses of mass spectroscopy, energy-dispersive X-ray spectroscopy, and in vitro cytotoxicity (cell viability test) assays support the overall nontoxicity of the edible PUF devices (Supplementary Methods and Supplementary Figs. 7-9). In Fig. 3, the flow diagram illustrates how a cryptographic key is extracted from an output response when challenged by a set of excitation and emission bands, including the raw output measurement, the bitstream extraction, and the final digitized security key. We mainly use four representative challenge-response pairs (n = 4) based on the excitation and emission peak wavelengths of the individual fluorescent proteins in silk (Supplementary Table 1 and Supplementary Fig. 1c). An input challenge (C ) is selected as a combination of the excitation and emission bands at specific wavelengths such as = 415 nm and = 460 nm; = 470 and = 510 nm; = 470 and = 560 nm; = 530 and = 630 nm, corresponding to eCFP, eGFP, eYFP, and mKate2 in silk, respectively. Upon optical excitation, a raw fluorescent image is recorded by a charge-coupled device (CCD) camera equipped with a conventional zoom lens via a tunable color filter (Methods and Supplementary Fig. 10a). In other words, the corresponding fluorescent image acts as an output response (R ). A resultant digitized key (K ) is obtained by an extractor that converts the fluorescent image of silk microparticles to a binary bitmap (Fig. 4). First, to improve the quality of binarization, we normalize the raw fluorescent image (300 pixels 300 pixels) by the maximum intensity (Fig. 4a). The noise is removed by applying a threshold of 20%. Fluorescent areas smaller than a specific pixel size of 20 are also considered as noise. Then, the image is resized to be 150 pixels 150 pixels with a binning process. Second, to ensure a low bit error rate (high reproducibility), we find the spatial peak position of each fluorescent silk microparticle where the highest intensity peaks of the microparticles are located, subsequently reducing the image size to 50 pixels 50 pixels (Fig. 4b). Then, the peak positions are only assigned to 1 bits and other pixels are 0 bits. Third, to remove the bias of 0-bits, we apply an enhanced version of the von Neumann bias compression algorithm with two-pass tuple-output debiasing (Fig. 4c)64. Because the fluorescent peaks are relatively rare events in the entire image due to the density of the fluorescent microparticles, global bias is present such that 0-bits are generated consistently more often than 1-bits. Finally, after debiasing, we use first 64 bits as a digitized key in each response, because a typical minimum number of peaks in the fluorescent images is 32. Combining four challenge-response pairs (n = 4) together, the final digitized key size results in 256 bits (=4 64). We assess the quality of randomness of the edible PUF-generated binary sequences, using the NIST statistical test suite that was originally designed to evaluate random and pseudorandom number generators65. One of the minimal requirements of PUFs is randomness with high entropy, as PUFs rely on an entropy source to create an unclonable output response66,67. When PUF responses are used for cryptographic key generation, it is also critical to evaluate the randomness to ensure the unpredictability of the keys generated by PUFs. The NIST statistical test suite includes 15 different tests to quantify the randomness of bitstreams. Each test focuses on a specific aspect of randomness (Supplementary Table 2). Some of the tests rely on the minimum sequence length of 1 106 and the minimum number of substrings (blocks) of 55, requiring a total stream of 5.5 107 bits. On the other hand, the key size of the edible PUFs is significantly shorter than those of random number generators. To use seven statistical tests that require a reasonable stream length, we explore the randomness of binary sequences summed from 30 different PUFs (Fig. 5). Specifically, we collect a total of 7680 bits from 30 different PUFs (256 bits for each PUF) and divide the bitstream into 60 sequences to perform each statistical test 60 times on individual 128-bit long sequences (Supplementary Dataset 1). Each statistical test returns two results; a p-value of a chi-squared (2) test and a pass rate (i.e., proportion), as shown in Table 1. As summarized in Table 1, the binary sequence from the 30 different PUFs passes all of seven NIST randomness tests without any post-processing. The parameter values used in each test and the characteristics of the NIST randomness tests are summarized in Supplementary Table 2. In other words, the bitstream (7680 bits) extracted from the 30 PUFs is statistically random, supporting the idea that the output responses of all protein-based PUFs can be unpredictable and unclonable. This result also supports the idea that our simple broadcasting process of particulate fluorescent silk offers a random spatial distribution as a straightforward yet effective entropy source60,61. To evaluate the basic PUF performance, we examine the digitized keys of the edible PUFs. We first estimate the bit uniformity by checking the equal probability of observing 1-bit or 0-bit states: where K is the lth binary bit of the key and s is the key size. Basically, the bit uniformity is the Hamming Weight (i.e., number of 1 bits in a binary sequence) of the s-bit key. For 30 different PUFs, the distribution of bit uniformity converges to the ideal value of 0.5 (Fig. 6a). Then, to evaluate the device uniqueness of each PUF, we calculate an inter-device Hamming Distance (HD) by counting a number of different bits between two PUFs under the same challenge. The device uniqueness measures the degree of correlation between digitized keys measured from two different PUFs. Ideally, the digitized keys from any two selected PUF devices should be uncorrelated, indicating that the state of a PUF is unknown even when the states of other PUFs are known. The inter-device HD between any two PUF devices can be defined: where K and K are s-bit keys of the ith PUF device and the jth PUF device among q different PUFs, respectively. The 30 different PUF devices generate a total of C (=30 29/2 = 435) comparisons. In Fig. 6b, the histogram of the normalized inter-device HDs is well fitted into a Gaussian distribution with a center at 0.5032 with a standard deviation (SD) of 0.0458, which is close to its ideal value of 0.5, exhibiting the excellent device uniqueness of all of the edible PUFs. In addition, we investigate the degree of correlation among the digitized keys of four responses in each PUF by calculating an average HD (Fig. 6c). The 30 different PUFs result in a mean HD value of 0.499 with a SD of 0.0041, indicating that the individual digitized keys in each PUF are also unique. When the number of challenge-response pairs is extended to seven, seven resultant digitized keys are still uncorrelated with a mean HD value of 0.5089 with a SD of 0.0766 (Supplementary Figs. 11 and 12). In addition, we calculate an encoding capacity of the edible PUF-generated binary sequences. The encoding capacity simply means a number of codes that can be generated and is defined as cs where c is the bit-level (c = 2 for binary bits of 0 and 1) and s is the key size38,68. To accurately estimate the encoding capacity, it is important to use an appropriate key size. When an imaging scheme is used, one may think that the total number of pixels (variables) is the digitized key size. In this case, the actual encoding capacity can be less than this nominal encoding capacity, because each individual pixel (variable) cannot be completely independent. One way for estimating the number of independent pixels (variables) is to analyze the degrees of freedom; s = p(1 p)/2, where p is the mean probability and is the standard deviation31,34. In Fig. 6b, the resultant width of the inter-device HD distribution shows that significant subsets of the key are mutually independent, corresponding to the degree of freedom (or number of independent variables) of 120 (0.5032 (1 0.5032)/0.04582). As a result, the edible PUF has c = 2 and s = 120, resulting in a relatively large encoding capacity of 2120 (1.3292 1036). Importantly, the debiasing process is useful not to comprise the actual coding capacity. If a security key is biased with too many 0 s or 1 s, the actual coding capability is often diminished. A large encoding capacity could be utilized to provide information on manufacturer-determined data, including dose information (e.g., dosage strength, dose frequency, and expiration date), manufacturing details (e.g., location, date, batch, and lot number), and distribution path (e.g., country, distributor, wholesaler, and chain). If a higher encoding capacity is required for a specific application, the key size of our edible PUF can simply be scaled by further optimizing the density of fluorescent silk microparticles, which allows for a larger number of peaks in each image. The number of challenge-response pairs can also be increased by incorporating additional combinations of the excitation and emission bands (Supplementary Fig. 11). To examine the feasibility for reliable PUFs, we test the readout reproducibility and stability of the security keys from the identical PUF device. The reproducibility of a PUF represents the ability of generating the identical keys following the same repeated challenges. We calculate an intra-device HD, which is quantitatively described by a bit error rate (i.e., percentage of error bits out of response bits with an ideal value of 0) from 10 challenge-response cycles (nine pairwise comparisons) for each PUF device. For the ith PUF device, an average intra-device HD captures the readout reproducibility: where K and K are the original s-bit reference key and a s-bit key extracted from the same PUF device at a different time-point t and m is the number of repeated measurements. Figure 6b shows a relatively low mean value of 0.0632 with a SD of 0.0164 estimated from the intra-device HD histogram for the 30 different PUFs at the same 10 challenge cycles. We further examine the long-term reliability under the same challenges after 60 days in the laboratory environment (i.e., stored at 22 2 C and 40-50% relative humidity in the dark) (Supplementary Fig. 13). When the fluorescent intensity of the raw fluorescent images taken 60 days apart is compared, the correlation coefficients (r) of the four responses (R , R , R , and R ) range from 0.833 to 0.983. For the pixel positions of the first 32 peaks in the binarized images, the r values are even higher than 0.895 for all of the responses. These results support the potential reliability of the protein-based edible PUFs, although the reproducibility assessments do not reflect extremely harsh conditions, given the medical applications. We further estimate a false positive rate and a false negative rate from the inter-device and intra-device variabilities. When PUFs are used for authentication, the false positive rate is the probability that PUF A is authenticated as PUF B. The false negative rate is the probability that a correct PUF fails to be authenticated. The resulting false positive and false negative rates are 9.6394 1013 and 3.0982 1012, respectively, assuming that the inter-device and intra-device variabilities follow Gaussian distributions (Supplementary Fig. 14). The pairwise comparison map of cross-HD analyses further shows that all of the 30 different PUFs are highly uncorrelated (Fig. 6d) where the diagonal line indicates the intra-HD values for the identical PUF device itself, while the off-diagonal points represent the inter-HD values compared with the other PUF devices.
How Do I Store My Solar Lights?
How Do I Store My Solar Lights?
Solar lights can be out year-round, as long as there is no chance that shovels, rakes or plows will destroy them. Just make sure you clear off the snow in winter and leaves in early spring and fall. Below are some articles and tips that discuss this. If you do store them, just pull them out of the ground, clean off any dirt from the solar panel or glass/plastic with light mixture of water and ammonia and pack them away for the winter.1. we bought some individual solar lights from English Gardens. They are copper looking ones. My husband?new battery's i'M sorry I am not sure, stay cool2. Can solar lights be charged from indoor light or has to be sunlight?Indoor light is OK. in my experience3. Best Overall 5 Brightest Solar Spot Lights For Your Outdoor SpaceThinking about adding solar spotlights to your yard? Not only are they great for lighting up your front driveway but they can be used for your patio, garden, or anywhere else you require a little (or a lot) of extra light. We are going to take a look at the five brightest solar spotlights for your outdoor space available in 2020. All of these spotlights are easy to install and eco-friendly. Plus, they are waterproof, easy to take care of, and add aesthetic appeal to any space. Here's the best overall 5 brightest solar spot lights for your outdoor space. These solar spotlights by LITOM are not only incredibly bright with High Light mode but they are also really versatile. These 12 LED solar lights come with the option of installation by way of a stake in the ground or by being mounted on a wall. The LITOM Solar Landscape Spotlights are unique in the way that they contain 12 LED bulbs with 50 lumens per bulb for a combined total output of 600 lumens per light. Although they do not include a motion sensor, they can still detect whether it's day or not, changing the light settings accordingly. Automatically adjusts according to day or night Lighting time is 12 hours on Low Light Mode, 6 hours on High Light Mode Charging time is 4 to 5 hours under full sunlight If you are looking for a bright solar light system that doubles as additional security for your home, the DrawGreen Solar Motion Sensor Light is a fantastic option. This is an extremely popular model among homeowners because of all the features it provides. One of the reasons it's so popular is its exceptional durability. This solar light contains an incredibly strong aluminum alloy shell that can last between three and five years. The DrawGreen Solar Motion Sensor Light has a motion sensor optic grade PMMA lens that lights up a 40 to 55 ft surrounding area. The motion sensor detects movement from up to 26 feet away, an ideal security feature for any home. Light saving feature that automatically turns off during the day and on when it detects low or dim lighting Detects movement from 26 feet away with a 120 angle range Charging time is 6 to 8 hours under direct sunlight If you are looking for super bright solar spotlights that also change color, the ROSHWEY Outdoor Solar Spot Lights present a fantastic option. These solar spotlights are popular not only for their unique features but for their easy-to-fit design - you do not need to be an experienced installer to fit these lights. The ROSHWEY Outdoor Solar Spot Lights are fitted with 18 high-brightness LED bulbs and include a whopping nine different lighting modes. These lights are highly waterproof, too, with an IP65 rating. Arguably the best feature of the ROSHWEY Outdoor Solar Spot Lights, though, is that they change seven different colors if you feel like adding a bit of whimsy to your yard. Up to 18% conversion rate of solar energy Looking for bright solar lights that are versatile and essentially flawless? Let's just say the JSOT 18 LED Solar Spot Lights are probably for you. These LED solar lights provide a dual-head design with 18 high-brightness 2835 LED beads in each light. This creates an illumination distance of up to 33 feet with a light output of up to 1000 lumens. While these lights do not have a motion sensor, they do contain a High Light Mode and Low Light Mode that automatically change to suit the time of day when they sense a change in lighting. The JSOT 18 LED Solar Spot Lights also come with multiple accessories that allow you to insert your flagpole solar spotlights into the ground or to easily fix them on the wall. 2 lighting modes of High Light Mode and Low Light Mode that adjust to the time of day Charging time of 4 to 6 hours under full sunlight Adjustable joints, the solar panel can be rotated a full 360 without joint adjustment Looking for something a little different than our previous options? If you are looking for the ultimate in both brightness and high tech, this solar flood light by YQL could be an excellent option for you. Although a floodlight is generally thought of as the kind of streetlight that came on when it was time to go home when we were little, they can be used in a variety of ways, like lighting up basketball courts, patios, lawns and, of course, your driveway. This solar flood light contains an auto on/off dusk-to-dawn timer with a remote control so you never have to worry about switching the light on yourself - it does it for you. Plus, with a 40-foot remote control distance, you do not need to worry about where you are while you are making adjustments. Should I invest in solar spot lights for my outdoor space? Yes! Solar lights are practical, functional, and easy on the environment. It's important to keep in mind that solar spotlights do require charging time which takes much longer if direct sunlight is not available. That said, if you are looking to take a step towards becoming more eco-friendly, we definitely recommend any of these.
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