Why Does Your Shadow Lengthen As You Walk Farther Away From a Street Lamp?

when we stand near the street lamp we receive verticl light rays whuch form a shorter shadow than that formed by slanting light rays

1. A street lamp weighs 150 N. It is supported by two wires that form an angle of 120.0 degrees with each other.?

a. I would very much like to show you how it is done but to enable me to make you understand we need a diagram of the forces involved. The weight of the lamp of 150N is the resultant of the force T on each wire. If you can manage to draw the forces, you will see that T =//sin30=150N. b. At 90 degrees, T=150sin45=106N. The work will not be easy to understand if you do not have the diagram.

2. The wavelength of the blue light given off by a mercury vapor street lamp is 436 nm. What is the frequency of?

E = h c / wavelength h is Planck's consistent, c is the speed of sunshine in m/s and wavelength will be expressed in meters The E that you calculate is in accordance to photon. So multiply the consequent quantity by technique of technique of Avogadro's quantity, and also you are finished

3. Street lamp at night goes off when AC comes on?

The reality is that your area's electric provider's infrastructure is inadequate; They are not going to put very much money into something that the city or county says has to be on......and you must be at the end of the line... you do not have any ownership of the street light except for the taxes the household pays. When your a/c creates a demand and a power surge the light has to restart due to the momentary voltage drop. It possibly could be alleviated by having the power company place your service drop in the line after the street light or have the city place the street light on a different service line.

4. Calclulus - Related Rates: A 6-foot-tall woman is walking at the rate of 4 ft/sec away from a street lamp ....?

Draw a right angled triangle ABC, where

5. why does a sodium street lamp give off a different color than a neon light?

Sodium and neon as elements do not have the same electronic structure, not only in terms of number of electrons, but the energy levels at which the orbitals lie. When light is given off by a lamp, what you are seeing is the emission of energy which the electrons in the atoms had adsorbed to move up to higher energy orbitals from lower ones. Since the difference in those levels is different in neon and sodium, the wavelength of the light emitted will be different.

6. How much electricity does a street lamp use?

Probably about 100 watts

7. The past 2-3 years whenever I walk or drive under a street lamp it has sometimes gone out. What's it mean?

Common. Just means you walk around streetlamps, and you have a confirmation bias to notice when they shut off, which is actually very seldom statistically speaking. I used to notice that. I do not anymore. Probably has a lot to do with the age and type of street lights around you. Some routinely shut off on a frequent basis temporarily (they are not burning out), maybe older ones do that more. Not only are you not the first, I am not even the first, I read about this phenomenon many years ago.

8. would You rather be a Street-LAMP or a LAMP-Shade?

A street lamp cause i love being outside, i think i would die if i had to stay in the house 24/7. But then again a lampshade would have more fun....seeing everyside of it's owners lol ;)

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Why Does a Sodium Street Lamp Give Off a Different Color of Light Than a Neon Light?
Neon, IIRC, has an orange cast to its glow while sodium has a yellow cast to its glow. The color comes from photons being emtted as electrons fall from a higher energy orbitals into a lower energy orbital. The energy difference between orbitals in neon is different from the energy difference in orbitals in sodium.1. A street lamp weighs 150 N it's supported by two wired that form an angle of 110 with each other?the vertical component of the tension in each wire supports half of the weight of the streetlamp the wires each form a 55 angle with the vertical (110 / 2) t cos(55) = 150N / 2 for an 80 included angle ___ t cos(40) = 75N2. 1'16 scale street lamp 1940s?I would get a good picture of the lamp post and head, then it's off to the hobby shop for some brass tubing, wire and wheat germ light bulbs3. What does it mean when a street lamp goes off upon reaching it?ah faulty wiring??4. why does a sodium street lamp give off a different color than a neon light?When atoms are sufficiently excited, electrons are promoted beyond the outer shell and the atom ionises. When the electron falls back again, the energy is re-emmitted as light. the wavelength of the light [it's colour] depends on the element. Hence neon gives a red light and sodium a yellow light. Incidentally, most sodium street lights contain neon as well and are red when they first come on .. when they heat up and the sodium starts vaporising, the familiar yellow appears as this colour is so intense that it swamps the weaker red.5. would You rather be a Street-LAMP or a LAMP-Shade?Street lamp, no question. To shine instead of shadowing another light. Be out there, meet people (or dogs at least)6. Why would my AC unit make the street lamp turn off?Your AC Unit probably uses a lot of energy when you turn it on, thus making the light go out7. where can i park my bike in the city if theres no bike racks?Park it next to a solid post like a power pole or street lamp and chain it up with a solid logging chain in a plastic hose that will not scratch your bike with a hefty padlock. Do not use a street sign or anything that can be removed with 1 bolt. U bolts and cables are junk. Ask any bike courier. Chain up both wheels as well and anything else that can be easily removed. good luck.8. why does your shadow lengthen as you walk farther away from a street lamp?had to do with angle9. would You rather be a Street-LAMP or a LAMP-Shade?Lamp shade, dogs pee on street lamps10. Does anyone know anything about the very large dragon street lamp in Venice Italy?I will take a look at it tomorrow...I am actually in Venice!!! Ciao... Got there and saw the dragon..though nobody knew about it...it's pretty neat11. Is a landlord required to have a street lamp on a street when they rent every house on the street?The only time I've ever seen privately maintained street lights is out in the country12. would You rather be a Street-LAMP or a LAMP-Shade?A street lamp so I could be the beacon of light that guides people to their front doors every evening. Keeping them safe from harm13. Why is a street lamp's orange light become white before turning orange?as the electricity is started the lamp begins to glow the wave lenght of photons emitted is large and in not much hot at that instant later after some time it will get hotter and emit photons of smaller wave length as you knoaw orage is smaller wave lenght than white14. Calclulus - Related Rates: A 6-foot-tall woman is walking at the rate of 4 ft/sec away from a street lamp ....?Draw a right angled triangle ABC, where
Outdoor Ip65 Integrated Garden Solar Panel Led Street Lamp Fixtures
the brillihood 12w integrated solar street light is an affordable solar street light with a brightness of over 1200 lumens. it shines a cool bright white light with a temperature of 6000k. it is suitable for lighting up garages, streets, patios, and gardens. 300w solar street lights outdoor lamp, 480 leds 12000 lumens with remote control light control, dusk to dawn security led street light for yard, garden, street, basketball court 300w led solar street light factory direct sale ,20000lumens street street light outdoor ip67 waterproof with remote control security lighting for yard, garden, gutter, swimming pool• RELATED QUESTIONWhat size solar panel would I need to run a rotating fan?That you could run that fan straight from the panel. A 2 Watt panel is about the right dimension. It will begin spinning at cut down vigour output however not acquire the rated speeds unless peak vigor from the panel. The perspective should be satisfactory.The Guardian asks: Are we really going to let ourselves be duped into this solar panel rip-off?I've often thought about crooks bypassing meters myself. But surely to get paid for the electricity you've stolen and sold to the grid would require an "Import/Export meter". At present obviously we only have an "Import" meter to enable our bill for usage of electricity to be measured. Surely there's only one cable? The same cable surely imports on demand and exports when the householder's electricity production exceeds demand, thus the "excess" is fed to the grid via the "Export" meter? It's not April 1st is it?How much would be the investment for solar panel which runs 2 Air conditioner?Solar Air Conditioner IndiaHow can you have solar panel home?Not easy to convert it into AC power because it produces DC power that is different than from wall outlet power source and its voltage is very low, like 0.5V per cell. Must need first to charge a very big battery bank, and then convert the battery power into AC power with a converter before able to power a fridge. Solar penal contains many small solar cells, they convert sun light ( the only free light source) into electricity directly with a very low efficiency like 5%. Mount them with a strong frame on top of roof facing to the open sky to catch the bright sun light, under shadow would not work well or produce no electricity. A VERY EXPENSIVE SYSTEM AND REQUIRE TAKE CARE OF IT DAILY, AVERAGE LIFE IS 5 YEARS.If someone shined a flashlight at a solar panel, would it generate electricity?It may generate electricity. But it would not generate as much power as your flashlight would use. Your flashlight produces light. It also produces heatWould a solar panel that generates 50 kW of power charge a battery to 500 kWh in (about) 10 hours? (I'm assuming there would be some losses, but I wanted to see if that was correct for most cases)You are theoretically correct, except that it is too much to expect charging at topmost power of 50 KW non-stop for 10 hours, starting from discharged condition. You will never get sun for this long period and that too at this level.Sunlight will be available for maximum 5-6 hours a day, and intensity depends on season, weather and other conditions. Intensity keeps varying over a day, over a season for the same time.So you will have to charge it at a higher rate, or be content with the charging you get in a day, and wait for few days for complete chargingI have a 30 watt solar panel that puts out 1.8 amps. What size battery should I get?regular car battery will work but you will need more than one . may be 30 or more depending how much eletcricity you need when there is no sun or not enough sun. It depends on a number of factors do you have A.C. electric oven stove electric dryer ect.An appropriate voltage regulator / limiter for a 5V solar panel for USB charging?My first reaction is to put the two panels in series, then use a off the shelf buck regulator chip. If the two panels can not even put out 6 V or so in series (3 V per panel), then there is so little power available that it does not matter if the output is just shut offHow to convert a 10-Watt solar panel into 3v & 3 amp?I saw somewhere an answer to a question that seemed to apply quite usefully to your question. I am posting it here with slight modification. Note that this is not my work - just seems mainly useful.Comments in [square brackets] are mine.[These are all good points worth noting that many people miss]To get 9W out of a 10W panel you need bright mid-day sun, the panel must be clean AND pointed towards the Sun and 90% SMPS efficient Buck Regulator that utilizes the 17.3V max power level of the array.[worth noting]Not all SMPS will do this as the switching current can be much higher than the average current thus drop your PV Array well below Vmax power, so more Power management design is required, such as a 17.5V battery design to regulate the input voltage. If you do not , you will be lucky to get 5W.[Here is a useful TI web bench simulation that somebody has set up that matches your need.]You also want an Econo mode for cloudy days for more efficiency.The TPS54526 is one good solution.will this solar panel power this fan through dc current?Yes,you will need a good storage battery to carry it through the nightI want to make a solar panel for 240 volts, help me out please?If you are in Malaysia, I am not sure why you need a heater, except maybe a water heater. For that, use a solar heater directly. For the electricity, the most cost-effective way to do it is to stay connected to the grid, and offset your bill with solar. That way, you do not need to oversize the solar for contingencies. There will be compromise in your lifestyle, everything that plugs into the wall today will still plug into the wall and work fineis 12v 800w solar panel enogh tu run a 12 cubic refrigerator?A 12 cubic foot fridge operates on 110 volt power, not on 12 Volts, you will need a generator to power a fridgeWhat would a 60 watt solar panel power? How many watts for a small home?You can run a 60 watt light bulb when the sun is shining. Or your can charge a battery and then run the 60 watt light bulb at night. It theory if you had 8 hours of sun you would be able to run the bulb for 8 hours off of battery. In reality because of losses you will not get 8 hours of bulb running timewhat all can a 200 watt solar panel power up?I am going to assume you have a 200 watt continuous wattage converter on your deep cycle batteries. Overall there is not a definite answer as much as a recommendation by doing research of items around the house that you may want to run. The best way to do some figuring is to take the wattage requirements of devices around the house. The most common CFL lamp is 13 watts 120 volts. You can extend the charge life by using 12 volt LED lighting, which would bypass the inverter (always a good idea). Ditto on a fan - a typical modern 20" box fan draws 50-100 watts depending on speed. A laptop computer can draw over 100 watts alone when under a full load, but taper off when not needed. The list could go for miles. A Kill-A-Watt wattage meter is a must have for checking items around the house for their actual current draw. Many ratings are maximum ratings, not the actual real-world normal draw. Also look into more and more direct 12 volt items. Then you can bypass the inverter, and that is a plus as the inverter is not totally efficient.Does anybody know if there are any courses for solar panel installation, and/or what trades you need for this?What you ought to recognize will depend on WHAT sort of installations you are going to be operating with. In regular, for business you wish to have fundamental mechanics and wiring. For house, you may additionally want a few carpentry, roofing, preserving structural integrity, plumbing, and so on. In side it additionally will depend on what sort of sun installations you are doing, (vigour, air warmers, water warmers, and so on.)Is this how much this solar panel collects an hour?it collects 135 watts an hour ( think of it as gallons in a pail) at 17 volts ( the pressure in the pipe filling the bucket ).....yes all you tech savy people I know its not quite that simple...... so when that panel is operating at peak efficiency ( which depending on how far north you live is anywhere from 2 to 6 hours a day) you could charge a 12v battery at 8 amps....of course at 17 volts you would fry a 12v battery really quickly; you need to buy an regulator as well.......or if you were running the panel to an inverter you could power two 65 watt light bulbs.I have a few solar panel stick in the ground night lights that beep in the evening but don't give light. Why do they beep?My guess is, they only beep in the daylight hours, because their internal battery is shorted or otherwise non-functional, they have no or insufficient voltage to operate at night, and cannot charge in the daytime.And maybe they screwed up when assembling, and those few were put together with "make an annoying beep when voltage is present" parts, rather than functional "solar-recharged night light" partsanyone Arco solar panel ASI 16-2000 watts ?These are around 25 years old The following link is for some test done on these old modules that found them to be about 30W. (Actual wattage will be dependent upon incoming sunlight) Starts on page 5would wiring a solar panel and grid tie inverter to the house wiring save electricity?NO, it just changes the sourceCan I charge my 12v deep cycle battery with any size solar panel?Yes I use a 50 watt panel to charge my boat batteriesdoes sunlight in winter have the same amount of power for a solar panel?Yes it will. The reason is that the panel, being pointed directly at the sun, will have the same surface area regardless of the season. The earth on the other hand is tilted at about 23 degrees, so during the winter the sunlight is spread over a greater area than in the summer, so it does not warm the air as much and hence, colder weather. By maintaining an angle perpendicular to the sun at all times, the sunlight is never spread out. Although you will have to adjust it throughout the year to maintain that angle, as the earth will 'tilt' beneath it.Could a solar panel, essentially power itself?No, because energy is lost through dissipation and through the conversion process. With mirrors you might be able to reduce this effect.Can someone explain this microcontroller ADC interface (for reading solar panel voltage)?What is the role of the pnp transistor network?It's a differential voltage to current converter followed by a load (R34 and R35). The voltage between P and P- sets a voltage across R31. This (minus 0.7 volts) sets a voltage across R33 and that causes a current to flow out of the collector (largely irrespective of what load the collector has). Given the values of R33, R34 and R35, whatever voltage is set across R33 appears across R35 but, reduced by 3:1. Importantly, this voltage is ground referenced making it suitable for the ADC to make sense of. So there is level shifting involved
Why Would My AC Unit Make the Street Lamp Turn Off?
Whenever an electric motor starts, it places a heavy load on the power line for a fraction of a second, and that causes the voltage to momentarily drop. If that voltage drop goes below the voltage that the light requires to stay lit (these are often gas-filled tubes that use sodium or mercury vapor) the light will go out. It's not likely to be a problem, but if you are concerned, the electric company may be willing to put a recording monitor on the power line so that they can actually measure the drop. If it's excessive, there may be a bad connection somewhere upstream of the light and your house, or the wires may inadequate, i.e. too thin. for the service current that you have. If they do not have that equipment, or are unwilling to check it for you, a well-equipped electrician may have access to a power-line monitor/recorder. If the voltage drops below the minimum, then the electric company needs to install a larger gauge wire to serve your house (or even your neighborhood).1. Smart street lamp tech could put speed cameras everywhereInternet-connected, "smart" streetlamps and intersections are being touted as the next big thing in the world of automotive technology, but while they would arguably be a major benefit to road safety and driver convenience, such systems could also create a blanket of speed cameras. The concept of networked road infrastructure is not new, and in many cities the lights and built-in sensors of most intersections are already monitored remotely. The next step, however, is to add more sensors into the mix to keep tabs on the precise positions of cars and pedestrians, while beaming out that information to any cars in the immediate area. It's a noble idea. Say, for example, that there's a pedestrian about to cross the road in front of you but is obscured by a truck in the next lane (below). Such a system could give you advance warning - or automatically slam on the anchors - before the situation becomes life-threatening. Accidentally running a red light could also become a thing of the past too, as your car would be alerted if it's in danger of crossing a stoplight, while the extra data generated would be critical to making autonomous vehicles function both efficiently, and safely. That safety-critical information would be sent directly to cars in the vicinity through the Direct Short Range Communications protocol, rather than via a cloud server over the internet. With ultra-low transmission times, DSRC is a better choice for that kind of vehicle-to-infrastructure information transfer. The benefits do not stop there. More intelligent vehicle monitoring would allow traffic light sequences to respond to changes in traffic flow, easing congestion and reducing the amount of time wasted by sitting still at intersections. With each junction connected via the internet, slow-moving traffic jams could be cleared far more efficiently by phasing traffic light cycles sympathetically. That said, safety is the main driver behind the smart intersection idea. Continental, which showcased its latest vision for digitally-enhanced street infrastructure at the Continental TechShow earlier this month, says its aim is to use its sensor technology to reduce the number of crashes globally. With 40 percent of road crashes in the United States occurring at intersections, Continental says it makes sense to start its smart infrastructure efforts there. Meanwhile, sensor modules strapped to ordinary lamp posts - Continental's "Intelligent Street Lamp" concept, below - holds the potential to stretch the digitisation of the road network well beyond illuminated intersections. Besides informing nearby intersections of approaching traffic, the street lamp modules would also be able to monitor parking spaces and direct nearby cars to vacant spots. They could even survey air and noise quality, uploading that information to the cloud. If there's a hazard on the road, such as a fallen tree or vehicle accident, they could alert approacing cars via the DSRC protocol. However, even Continental admits that the sensor technology could be adapted to other purposes, such as extending the reach of speed enforcement well beyond main roads. "It depends on the country. I cannot make that general statement, because it's really specific, but every market has its requirement. If you look at how speeding, for example, is solved today by radar technology, this is the technology that we are implementing here in our sensor, so what is possible today can be done in future done by a street lamp-mounted sensor." But that's not to say that Continental's system will automatically fine those creeping above the speed limit wherever it's installed. In fact, data protection laws in Europe mean that kind of surveillance is be expressly forbidden. "Of course, everything we are doing here [in Europe] is GDPR (General Data Protection Regulation) compliant - it's about taking good care of an individual's personal information. We solve that by not transmitting any personal data at all, like a licence plate." There are, however, no such data protection laws in Australia. According to Continental, if the client city or state wants the ability to use its smart streetlights for speed enforcement, it has the technological means to do so. Cost, however, may be the only obstacle to putting that tech on every street. "If you look at more advanced systems like combining camera and radar, which means detecting over-speeding through license plate recognition at the same time and automatically fining those people, that is a use case that today is probably only happening in the Chinese market right now - but we will see how the market develops." In many Chinese cities citizens can be detected by CCTV cameras and identified via facial recognition, with an AI system automatically fining those detected breaking the law by, for example, jaywalking - an extension of that government's mass surveillance program and a precursor to its infamous "social credit" system. "The concept we have here is a modular concept, where a city can really address their specific 'pain points' - which are very individual". "For example, the US is using gunshot recognition on street lamps, so microphones on streetlamps can hear a gunshot, and through triangulation you can know where the gun was fired. At the same time the waveform is analysed and you can know which kind of gun it was." While Australia does not have the same issue with gun crime or the draconian AI-driven 'social credit' system of China, the prospect of putting a speed camera in every street may prove to be an attractive idea to police and councils eager to clamp down further on speeding motorists - while also eventually delivering the safety benefits touted by Continental as cars become increasingly connected.2. Why would my AC unit make the street lamp turn off?The heavy start current for your Ac is possibly causing enough of a voltage drop that the street light which probably has a weak firing card, is below the threshold voltage the light needs to stay on. This will get worse through the year. Finally it will turn off by itself and stay off for about an hour then restart and repeat3. A street lamp weighs 150 N. It is supported by two wires that form an angle of 120 degrees with each other..?once again components. Check my updated answer for the first inclined plain question also
Is It Legal to Lock a Bike to a Street Lamp Pole?
not illegal if you ask their permission... most people are cool if you talk to them, just ring the doorbell, explain the situation, and they will probably give you the green light.1. A hole is drilled form North pole through the center of Earth to South pole?We need to know the effect gravity will have - will it pull the ball toward the wall of the pipe, thus apart, or will it pull the balls together. Since each ball is closest to its respective wall than its partner, the net effect of gravity will be very, very slightly greater towards its respective wall. So the balls will be slightly farther apart when they emerge, guess by 1mm.2. anchor-based vs. embedded: what's the difference?The choice between anchor-based and embedded installation for your light poles comes down to location, aesthetics, and budget. Here's what you need to know. Anchor-based poles include a metal base plate welded to the shaft of the pole. This plate provides provisions for typically three to six anchoring bolts. When the concrete footing is poured, anchor bolts are "cast" into the mold and emerge above the surface. The protruding area of the bolts attach to the light pole's base. Embedded, or direct burial, poles are installed directly into the ground. As a result, the poles do not require a base plate and anchor bolts, creating a cleaner look. A longer shaft is required for embedded installation to compensate for the length of pole buried in the ground. To determine the total pole length required, the general rule is to take 10% of your ideal fixture mounting height and add 2 feet. For example, a fixture mounting height of 20 feet requires that 4 feet be buried, equaling a 24-foot pole. Because they eliminate the need for anchor bases, embedded poles are less time- and cost-intensive to install. However, they are not ideal for sandy areas or locations with loose soil. The embedded portion would need to be significantly increased to accommodate such conditions. At Lyte Poles, we provide both anchor-based and embedded installations for light poles. Click here to view our products. Have questions? Teresa has the answers.3. Who maintains the ATM at the South Pole?Probably the Commonwealth bank, they are in everyones pocket4. I am thinking of taking pole dancing classes as ago to the BadaBing and ask the girls who dance there. great idea tell him to have plenty of singles ready5. how do you put string on the fishing pole?1 Step Two Thread the new line through the eyes on the pole. 2 Step Three Tie the line to the reel. 3 Step Four Wind the line onto the reel 20 cranks. 4 Step Five Check the line for twists. If twisted, turn the spool of line over. 5 Step Six Fill the reel to 1/8 inch from the spool rim.6. Building a pole barn, Stall question?I've got a mare that hates stalls too. I've never been able to get her over it. SHe wo not eat if she's in a stall, she just weaves, and weaves, and weaves. I truly do not think locking a horse in a stall will just make them get over it. What I've done is attach a pen to the stall, so I can leave the door open. Just having that door open makes a big difference to her. She does not feel trapped. So she will still go in her stall if the weather is nasty and she can not be in the pasture. But if I close htat door, it's a different story. You really do not need to force her to be inside when the weather is nasty. Horses are smart enough to know what kind of weather they can handle. Stalls are an invention to make people feel like they are doing something. But stall living is not natural to a horse. So just give her an option of in or out and let her make the choice.7. Just a General Pole I'm Taking?Do not you think it's kind of inappropriate to talk about the poles that you are taking on yahoo answers?8. Pole Dancing Outfit Ideas Please!!!?Hmm.. why do not you not pole dance. Would not you rather have some pride? Earn money a different way
A Street Lamp Weighs 190 N. It Is Supported by Two Wires That Form an Angle of 140 with Each Other?
a) Summation of forces on the y-axis T1 sin20 T2 sin20 = 190 Summation of forces along the x-axis T1 cos20 = T2 cos20 T1 = T2 a) T1 = 190/(2 sin20) = 277.76 N T2 = 277.76 N ----------these are the tension of the wires. b) If the angle between is reduced to 110 degrees. Then the tension will be, T1 =T2 = 190/( 2 sin 35) = 165.63 N1. A street lamp weighs 110 N. It is supported by two wires that form an angle of 100° with each other. The tensiResolving forces vertically . Two angles make 100 degress with each other . make angle of 100/2 = 50 Degress with the vertical Tcos50Tcos50=110 T=85.5 N. b) Now they make an angle 0f 70/2=35 with the vertical Tcos35Tcos35=110 T=67.1 N.2. A street lamp weighs 150 N. It is supported by two wires that form an angle of 120 degrees with each other..?Any system...let me repeat...any system that is not accelerating (or decelerating) has balanced forces acting on it so that the net force (f) is exactly zero. This results because f = ma = 0 if and only if a = 0 for a mass m. OK your weight W = 150 N is not accelerating, in fact it is static; so there is no motion whatsoever. So f = 0 = ma for the system, which includes the weight and the two wires. This means that something is canceling out the weight because f = ma = W - F = 0; where F is that "something" canceling the weight (W). The only "something" you've defined for your system is the forces pulling up by the attached wires. Since there are two wires, each one has a share of that upward force. By "upward" we mean vertical force acting in a direction opposite of the weight (W). As there are 120 deg between the two wires, the vertical force for both wires is W cos(60) = Fv and for each individual wire, it's Fv/2 = (W/2) cos(60). Similarly, the horizontal force on each wire is Fh = (W/2) sin(60). Since the vertical and horizontal forces form a right angle for each wire, the force along each wire, the tension, is T = sqrt(Fv^2 Fh^2). And, by substitution, T = sqrt((W/2)^2 cos(60)^2 (W/2)^2 sin(60)^2) = sqrt[(W/2)^2 [sin(60)^2 cos(60)^] = sqrt((W/2)^2) = W/2. a. Thus, the tension (T) in each wire is one half the weight of the street lamp = W/2. b. Following the same line or reasoning used to find the tension at 120 deg, we see that the angle makes no difference because sin(deg)^2 con(deg)^2 = 1.0 no matter what deg is. Tension, therefore, will still be W/2 in each wire with 90 deg between them. The important thing to remember is that, if the system is not accelerating or decelerating, the net force on it is zero. So all the forces acting on it will cancel out.3. Smart street lamp tech could put speed cameras everywhereInternet-connected, "smart" streetlamps and intersections are being touted as the next big thing in the world of automotive technology, but while they would arguably be a major benefit to road safety and driver convenience, such systems could also create a blanket of speed cameras. The concept of networked road infrastructure is not new, and in many cities the lights and built-in sensors of most intersections are already monitored remotely. The next step, however, is to add more sensors into the mix to keep tabs on the precise positions of cars and pedestrians, while beaming out that information to any cars in the immediate area. It's a noble idea. Say, for example, that there's a pedestrian about to cross the road in front of you but is obscured by a truck in the next lane (below). Such a system could give you advance warning - or automatically slam on the anchors - before the situation becomes life-threatening. Accidentally running a red light could also become a thing of the past too, as your car would be alerted if it's in danger of crossing a stoplight, while the extra data generated would be critical to making autonomous vehicles function both efficiently, and safely. That safety-critical information would be sent directly to cars in the vicinity through the Direct Short Range Communications protocol, rather than via a cloud server over the internet. With ultra-low transmission times, DSRC is a better choice for that kind of vehicle-to-infrastructure information transfer. The benefits do not stop there. More intelligent vehicle monitoring would allow traffic light sequences to respond to changes in traffic flow, easing congestion and reducing the amount of time wasted by sitting still at intersections. With each junction connected via the internet, slow-moving traffic jams could be cleared far more efficiently by phasing traffic light cycles sympathetically. That said, safety is the main driver behind the smart intersection idea. Continental, which showcased its latest vision for digitally-enhanced street infrastructure at the Continental TechShow earlier this month, says its aim is to use its sensor technology to reduce the number of crashes globally. With 40 percent of road crashes in the United States occurring at intersections, Continental says it makes sense to start its smart infrastructure efforts there. Meanwhile, sensor modules strapped to ordinary lamp posts - Continental's "Intelligent Street Lamp" concept, below - holds the potential to stretch the digitisation of the road network well beyond illuminated intersections. Besides informing nearby intersections of approaching traffic, the street lamp modules would also be able to monitor parking spaces and direct nearby cars to vacant spots. They could even survey air and noise quality, uploading that information to the cloud. If there's a hazard on the road, such as a fallen tree or vehicle accident, they could alert approacing cars via the DSRC protocol. However, even Continental admits that the sensor technology could be adapted to other purposes, such as extending the reach of speed enforcement well beyond main roads. "It depends on the country. I cannot make that general statement, because it's really specific, but every market has its requirement. If you look at how speeding, for example, is solved today by radar technology, this is the technology that we are implementing here in our sensor, so what is possible today can be done in future done by a street lamp-mounted sensor." But that's not to say that Continental's system will automatically fine those creeping above the speed limit wherever it's installed. In fact, data protection laws in Europe mean that kind of surveillance is be expressly forbidden. "Of course, everything we are doing here [in Europe] is GDPR (General Data Protection Regulation) compliant - it's about taking good care of an individual's personal information. We solve that by not transmitting any personal data at all, like a licence plate." There are, however, no such data protection laws in Australia. According to Continental, if the client city or state wants the ability to use its smart streetlights for speed enforcement, it has the technological means to do so. Cost, however, may be the only obstacle to putting that tech on every street. "If you look at more advanced systems like combining camera and radar, which means detecting over-speeding through license plate recognition at the same time and automatically fining those people, that is a use case that today is probably only happening in the Chinese market right now - but we will see how the market develops." In many Chinese cities citizens can be detected by CCTV cameras and identified via facial recognition, with an AI system automatically fining those detected breaking the law by, for example, jaywalking - an extension of that government's mass surveillance program and a precursor to its infamous "social credit" system. "The concept we have here is a modular concept, where a city can really address their specific 'pain points' - which are very individual". "For example, the US is using gunshot recognition on street lamps, so microphones on streetlamps can hear a gunshot, and through triangulation you can know where the gun was fired. At the same time the waveform is analysed and you can know which kind of gun it was." While Australia does not have the same issue with gun crime or the draconian AI-driven 'social credit' system of China, the prospect of putting a speed camera in every street may prove to be an attractive idea to police and councils eager to clamp down further on speeding motorists - while also eventually delivering the safety benefits touted by Continental as cars become increasingly connected.
All in One Solar Street Lamp- Solar Lighting
The working principle of solar lightsSolar lights are electric lights that are converted into electrical energy by solar panels. In the daytime, even in cloudy days, this solar generator (solar panel) can also collect and store solar energy. As a new safe and environmentally friendly electric light, solar light has attracted more and more attention. The solar light is composed of solar cell components, some LED lamps, a control box (with charger, controller, and storage battery in the control box) and a light pole. The luminous efficiency of the solar panel reaches 127Wp/m2, and the efficiency is high, which is very beneficial to the wind-resistant design of the system; the lamp holder part is integrated with 1W white LED and 1W yellow LED on the printed circuit board and arranged in a dot matrix with a certain interval as a plane. light source. The control box is made of stainless steel, which is beautiful and durable; the control box is equipped with a maintenance-free lead-acid battery and a special charge controller for solar street lights that has been successfully developed using patented slow pulse fast charge and discharge technology. The system uses valve-controlled sealed lead-acid batteries, which are also called "maintenance-free batteries" because they are rarely maintained, which helps reduce system maintenance costs; the charge and discharge controller is designed with full functions (with light control, Time control, overcharge protection, overdischarge protection and reverse connection protection, etc.) and cost control to achieve a very high cost performance. The working principle of the solar lamp is simple. The solar cell is made by using the principle of photovoltaic effect. During the day, the solar cell panel receives solar radiation energy and converts it into electrical output. It is stored in the battery through the charge and discharge controller. At night, when the illumination is gradually reduced to about 101ux, The open circuit voltage of the solar panel is about 4.5V, and the charge and discharge controller will act after detecting this voltage value, and the battery will discharge the lamp cap. After the battery is discharged for 8.5 hours, the charging and discharging control action is performed, and the battery discharge is over. The main function of the charge and discharge controller is to protect the battery. Solar energy is the energy produced by the continuous nuclear fusion reaction of sunspots inside or on the sun. The average solar radiation intensity in the earth's orbit is 1367w/㎡. The circumference of the earth's equator is 40,000 km, so it can be calculated that the energy obtained by the earth can reach 173,000 TW. The standard peak intensity at sea level is 1kw/㎡, and the average annual radiation intensity at a certain point on the earth's surface for 24 hours is 0.20kw/㎡, which is equivalent to 102,000 TW of energy. Human beings rely on this energy to survive, including all other forms of energy. Renewable energy (except geothermal energy resources), although the total amount of solar energy resources is equivalent to more than 10,000 times the energy used by human beings, the energy density of solar energy is low, and it varies from place to place and changes with time. This is the development and utilization of solar energy. The main problem faced. These characteristics of solar energy will limit its role in the entire integrated energy system. Although the energy radiated by the sun into the earth's atmosphere is only one part of 2.2 billion of its total radiant energy, it is already as high as 173,000 TW, which means that the energy that the sun irradiates on the earth every second is equivalent to 5 million tons of coal. The earth's wind energy, water energy, ocean temperature difference energy, wave energy and biomass energy, as well as part of the tidal energy all come from the sun; even the fossil fuels on the earth (such as coal, oil, natural gas, etc.) are fundamentally ancient Since the stored solar energy, the broad sense of solar energy includes a very large range, while the narrow sense of solar energy is limited to the direct conversion of solar radiant energy, photo-thermal, photoelectric, and photochemical. Solar Energy (Solar Energy) generally refers to the radiant energy of sunlight, which is generally used to generate electricity in modern times. Since the formation of the earth, organisms have mainly survived by the heat and light provided by the sun, and since ancient times, humans have also known to use the sun to dry objects and use them as a method of preserving food, such as salt production and salted fish. However, with the reduction of fossil fuels, solar energy is deliberately developed further. There are two ways to use solar energy: passive utilization (photothermal conversion) and photoelectric conversion. Solar power is an emerging renewable energy source. In a broad sense, solar energy is the source of many energy on the earth, such as wind energy, chemical energy, potential energy of water, and so on. As the earth's resources become increasingly scarce, the investment cost of basic energy is increasing, and various safety and pollution hazards can be said to be ubiquitous. In this way, solar lighting products should emerge with the popularization of solar water heaters. Here we will make a practical comparison between the effects of solar lamps and the use of mains lamps. *Compared with the complicated installation of mains lighting fixtures: In the mains lighting fixtures project, there are complicated operating procedures. First, cables must be laid, and a large number of basic works such as excavation of cable trenches, laying of concealed pipes, threading in pipes, backfilling, etc. . Then carry out a long-term installation and debugging, if any of the lines has a problem, a large area of ​​rework is required. In addition, the terrain and lines are complex, and the labor and auxiliary materials are costly. Solar lighting is easy to install: when solar lighting is installed, there is no need to lay complicated lines, just make a cement base and fix it with stainless steel screws. * Comparison 2 High electricity costs for mains lighting fixtures: There are fixed and high electricity costs for mains lighting fixtures, and it is necessary to maintain or replace lines and other configurations for a long time, and the maintenance cost is increasing year by year. Solar lighting lamps are free of electricity charges: Solar lighting lamps are a one-time investment, without any maintenance cost, and the investment cost can be recovered in three years, and long-term benefits. * Contrast three. Mains lighting has hidden safety hazards: Mains lighting has many hidden safety hazards due to construction quality, landscape lighting transformation, material aging, abnormal power supply, conflicts between water and electricity pipelines, etc. There is no hidden safety hazard in solar lighting: solar lamps are ultra-low voltage products, which are safe and reliable in operation. Other advantages of solar lighting: green and environmental protection, it can add new selling points for the development and promotion of noble ecological communities; sustainable reduction of property management costs, and reduction of the owner's public share of the cost. In summary, the inherent characteristics of solar lighting, such as safety, no hidden dangers, energy saving, no consumption, environmental protection, easy installation, automatic control and maintenance-free, will directly bring obvious advantages for real estate sales and municipal engineering construction. The solar lights can be widely used in the decoration of grassland, square, park and other occasions, belonging to the technical field of lamps and lanterns. The lampshade is mainly used to connect the bottom bracket, the battery panel is placed on the battery box and built in the lampshade, the battery box is installed on the bottom bracket, the light-emitting diodes are installed on the battery panel, and the solar panel uses wires to connect the rechargeable battery and the control circuit. The structure of the utility model is integrated, simple, compact, and reasonable; no external power cord, easy to use and install, and beautiful in appearance; due to the use of light-emitting diodes in the bottom bracket, the entire lamp body is illuminated after light-emitting, and the light perception effect is better; All electrical components are built-in, which has good practicability. Including snake lights, panel lights, solar neon lights, massage lights, etc. In practice, of course, solar outdoor lighting is a bit more complicated. In addition to large-capacity batteries and solar panels, the system also includes advanced dedicated monitors. When the lighting stops, the solar-powered battery starts to charge and then recharges fully to get more power. The key is that solar outdoor lighting and solar photovoltaic houses are equipped with solar panels, which have a dedicated microprocessor control system and battery. It is connected to a specially designed load lamp equipped with super reflectivity and high energy ballast. It has the advantages of high brightness, easy installation, reliable work, no cables, no consumption of conventional energy, and long service life. Using high-brightness LED light-emitting diode design, no manual operation is required, the lamps will automatically light up in dark, and automatically go out at dawn. The products have strong sense of fashion, bright texture, fineness, and modernity. They are mainly used in the lighting decoration of residential green belts, industrial park green belts, tourist scenic spots, parks, courtyards, square green spaces and other places. The solar power generation system is composed of solar battery packs, solar controllers, and storage batteries (groups). If the output power is AC 220V or 110V, an inverter is also required. The role of each part is: Solar panel: The solar panel is the core part of the solar power system and the most valuable part of the solar power system. Its function is to convert the sun's radiant power into electric energy, or send it to the storage battery for storage, or drive the load to work. The quality and cost of solar panels will directly determine the quality and cost of the entire system; Solar controller: The function of the solar controller is to control the working status of the entire system, and to protect the battery from overcharging and over-discharging. In places with large temperature differences, a qualified controller should also have the function of temperature compensation. Other additional functions such as light control switch and time control switch should be optional options of the controller; Batteries: generally lead-acid batteries, nickel-metal hydride batteries, nickel-cadmium batteries or lithium batteries can also be used in small and micro systems. Its function is to store the electrical energy generated by the solar panel when there is light, and then release it when needed. Inverter: In many occasions, 220VAC, 110VAC AC power supply is required. Because the direct output of solar energy is generally 12VDC, 24VDC, 48VDC. In order to provide electrical energy to 220VAC electrical appliances, the DC power generated by the solar power generation system needs to be converted into AC power, so a DC-AC inverter is required. In some occasions, when multiple voltage loads are required, a DC-DC inverter is also used, such as converting 24VDC electric energy into 5VDC electric energy (note that it is not a simple step-down). The design of solar power system needs to consider the following factors: Q1. Where is the solar power generation system used? What is the solar radiation situation in the area? Q2. What is the load power of the system? Q3. What is the output voltage of the system, DC or AC? Q4. How many hours does the system need to work every day? Q5. In case of rainy weather without sunlight, how many days does the system need to supply power continuously? Q6. What is the starting current when the load is purely resistive, capacitive or inductive? Solar power is not expensive. If the country is decisive and introduces an industrial policy that encourages the development of green energy, as technology advances, the cost of solar power generation will be further reduced. "His remarks aroused the reporter's curiosity. The reporter interviewed many experts and asked them to discuss together: what should be done to make solar power as good as possible for mankind and the environment. Industrial applications consume R&D costs. Ma Shenghong, a researcher at the Institute of Electrical Engineering of the Chinese Academy of Sciences, said that a new technology has different application requirements at different stages of development. Compared with other renewable energy power generation technologies, photovoltaic power generation has outstanding technical and economic advantages in solving the power supply of scattered villages, farmers and herdsmen in remote areas, and will play a major role in solving the power supply of China's 30 million people away from the grid. In some special fields, photovoltaic power generation has risen rapidly. It has been shown in many fields, such as aerospace power supply, unmanned power supply for communication stations, pipeline cathodic protection, military field power supply, toys, clocks, street lights, courtyard lights, and emerging environmental protection buildings. "Comparative advantage." Industrial applications can absorb a lot of research costs, and then promote the in-depth technical research, find more suitable materials and reduce cost solutions.
Self Lighting Solar Street Lamp for Thiruvaiyaru Community
we have always adhered to this simple concept: to make the best products and let customers rest assured. product description: this 40w integrated energy saving anti theft solar street light 50w solar fixtures with high efficiency adopts unidirectional nature of light. equipped with unique secondary optical design, the light is irradiated to the area of the required illumination, thus improving the light efficiency to1994 jeep grand Cher Laredo won't jump start due to anti theft. What can I do ?Are you absolutely, positively (beyond a shadow of a doubt) sure that it's the anti-theft that's giving you problems ?!? And not some other issueno. My anty theft light blinks all the time and when the head lights are on radio buttons lights up?first car?...this is normal98 Ford Expedition. Anti theft-ignition problem (car not running)Here are some instructions I found at this site. They may or may not work. Your only other alternative, it appears, is to take the vehicle to the Ford dealership and have them reprogram the key(s) for youThe 7 best anti-theft motorcycle locks today 2021Vietnam is a country in the top rate of motorbike ridership in the world today. The choice of motorbike over car is because Vietnamese income is low, urban construction model, roads are quite crowded and small, so it is more appropriate to buy a motorbike to move. The increasing demand for motorcycles like this requires people to take measures to protect their property, especially those who ride scooters or expensive motorbikes. Currently, there are many types of anti-theft locks launched to protect your vehicle, minimizing the theft of property anytime, anywhere. So you need to find out and buy a good anti-theft motorcycle lock? This article will help you. WHAT IS MOTORCYCLE ANTI-THEFT LOCK AND THE TYPES OF ANTI-THEFT LOCKS AVAILABLE The anti-theft motorbike lock is a device that protects your vehicle against theft of property. With technology developed today, in addition to conventional locks, the smart anti-theft lock also allows you to alarm emergency when the car is in danger, locate GPS, find the car in the parking lot, turn off and on the car remotely. ,... This is the most effective measure to protect your property. Currently, there are types of anti-theft motorbikes on the market such as: The most popular choice today is still the smart electronic lock. This type of lock is designed with advanced and modern uses such as receiving smart magnetic card, controlling via remote, starting the car without keys, finding and locking the car remotely, ... In addition, the lock also alarms. by horn and turn signal when robbed or taken away. If your vehicle is out of control, you can also search through GPS. Another advantage of the smart lock is compact and convenient, but the downside is that it is difficult to install, open the car and the price of the lock is also quite high. Disc lock is also very popular because of many advantages that protect your vehicle as well as other types of locks. Disc locks are cheap and have relatively high durability and are usually made of a very hard steel alloy that is difficult to be cut or destroyed. Especially with the disc lock, the thief's universal key is also difficult to open. Although not as functional as smart lock, but how to use the disc lock is much simpler, without consuming electricity. The lock is also very compact, and when needed, it is very convenient to install. U-shaped lock is less popular but is still used thanks to easy-to-spread installation, high durability of the lock due to made of stainless steel, solid alloy. The U-shaped lock can lock more parts on the motorcycle without interfering with the vehicle's electrical system. However, the downside is that the U-shaped lock can be broken, so you should choose to buy a U-shaped lock with sirens. Because breaking the lock without being detected by the horn is very difficult. As mentioned the useful function of the anti-theft lock for motorbikes, this is a very necessary item for your lover. As a valuable personal asset, you will not be able to avoid cases of fraudsters stalking and attempting to steal your motorbike, not to mention when you are subjective. A good anti-theft lock will help you minimize the theft of your motorbike and protect your property, whether it's a cheap or expensive car. With so many types of anti-theft locks, you can choose for yourself which is the best anti-theft locking device for motorbikes. The smart lock not only alerts you with the siren but also lets you know how far the car is expensive, where the car is via GPS and you can turn off the engine remotely. The installation of an anti-theft lock is essential, both to protect your property and help you feel secure to have fun without having to watch the eyes of any crook. Then why do not we invest. 2. CRITERIA TO EVALUATE AND CHOOSE WHICH MOTORCYCLE ANTI-THEFT LOCK IS GOOD All objects have high quality goods, poor quality goods, fake goods. Therefore, choosing to buy a good anti-theft motorcycle lock from reputable brands is extremely important. Currently, there are many brands providing high quality anti-theft locks, such as Iky, Hyper, Kinbar, Z-con, ... With a good anti-theft motorcycle lock, safety must be first, right? You should prioritize the selection of anti-theft locks with high security, good materials to both protect your vehicle well and ensure the lock can work for a long time without being easily damaged. Everyone wants to use a good anti-theft lock that is not fussy when installing. The more compact a device, the easier it is to install it will be widely used. However, with smart locks, it is necessary to affect the vehicle's electrical system, while disc locks and locks are usually not necessary. The selling price of anti-theft locks on the market is endless, cheap from a few tens of thousands of dong to high-end models of several million dong. Depending on the budget you spend on the key that can be selected accordingly. But because motorcycles are valuable personal items, you should consider investing in a lock with a slightly high price to ensure safety. The 1 major and reputable brand for anti-theft locks is Iky. The company provides a lot of quality anti-theft lock models for motorcycles and is popular with many people. The lock is designed to intelligently identify RFID technology, emit sirens and turn on the turn signal continuously when a motorcycle is in danger or people without a motorcycle registration card crash into the vehicle. The advantage is that Iky lock is quite compact, easy to use as well as install and suitable for both scooters and digital cars. Iky courses have many different types, depending on your budget and preferences you can choose your key. Iky remote is a type of RFID chip card used to protect motorcycles. You will only be able to start the engine if you turn on the remote, otherwise the car will emit horn and warning signal. This is the most commonly used lock, you can buy it under the name Iky Bike. Common selling price is 220 thousand VND. Iky Blutooth is more modern with identification via blutooth 4.0 technology, high safety and security. You will have an electronic key connected to the anti-theft system on the motorcycle and identify each other within a radius of 8 meters to be able to open the car, otherwise the car will not be able to start the engine. The company has Iky Found products sold for about 420 thousand dong. Iky GPS not only helps prevent theft, but also can find vehicles. If your engine is stolen and is moving, the system can help you remotely turn off the engine and track the vehicle via GPS, with an error of less than 20m. If you want to buy it can be found under the name Iky Plus, which is sold for about 1 million 500 thousand VND. Hyperion Pro 2018 is a high-end motorcycle anti-theft lock line using digital wireless technology. At first glance the lock seems simple, but this is a device with extremely high security and safety. The lock function identifies the owner of the car within a distance of 6m without having to turn it on and off, the lock will automatically do it when you come close and have a remote. In particular, if you accidentally lose the remote, you can synchronously copy information to the new remote and delete the old one. The lock card uses battery, so when the battery is low, it will automatically notify by signal signal. If a fraudster intends to open the car with a multimeter lock, it will alert with the signal signal and sirens continuously when your vehicle is being driven. Although the price of the Hyperion Pro key is quite expensive, if you invest in such a quality device, you will surely be satisfied and assured. Kinbar anti-theft lock is also a very quality lock but because the design is quite similar to normal home locks, it is almost less popular. Lock is made of anti-rust alloy, sure, durable. The lock is integrated with a siren that will alert you when the car is in danger. You just need to touch the lock to make a warning sound, so you must quickly put the key in the lock if you do not want to be noisy for a while. Kinbar lock also features anti-cut, anti-lock by sirens. Because of its convenience, this lock is also used to make a family anti-theft lock. In addition to smart alarm locks, vehicle disc locks are also an extremely popular form of anti-theft locks and are used a lot before the invention of more modern locks. Z-con anti-theft disc lock is shaped like a shoe commonly used for Honda, Yamaha, Suzuki, ... with disc brakes. The lock is designed to automatically lock when it hits the hole. Z-con gold is considered to be an anti-theft disc lock with beautiful design, durable material because it is cast with high-grade metal. The key is made of a circular file that can withstand the universal key, increasing security and safety for the vehicle. If we compare the lock lines at the same price but the quality one nine and eleven then the key Viettel can be compared with Iky key. You can be completely safe when using Viettel lock with 3 smart protection layers: siren warning, emergency shutdown and send a message to the owner's phone number. When the car is impacted, vibrated or led the car away, the lock will siren and turn off the engine, at the same time it will send a message to the owner. If a thief can unlock the car lock, it wo not be possible to start the engine. In particular, lock Viettel also provides shutdown feature through the phone by app Smart Motor Viettel. The application also has the ability to locate the vehicle, in case your vehicle has a navigation device installed, anti-theft. You can track where your vehicle is, running or stopping and can manage the vehicle in the most emergency situations. This is a smart and convenient lock line that everyone wants to install for their car. Fast Lock Plus is a premium lock using a magnetic card. The lock is applied with advanced and modern RFID technology to increase the protection of your motorcycle. Fast Lock Plus lock is capable of identifying the owner within about 2m if you bring a remote. The control button mounted on the car is made of high quality hard plastic material, effectively protecting the anti-theft system and effectively waterproofing. The advantage of Fast Lock Plus is that the installation process is simple, fast and suitable for almost all types of vehicles from digital cars to scooters or large displacement motorcycles. With a lot of anti-theft alarm lock lines with quite high prices, the Toyota TA04 will be a product in the popular anti-theft lock segment. Although the price is extremely cheap, the Toyota key also does a lot of functions, not inferior to expensive anti-theft locks. That's why this product is favored by many people. The lock can locate the vehicle in the parking lot, remotely turn off and on the engine, alarm when detecting an intrusion, turn off the engine in an emergency even though the vehicle is running (if you press the lock button),... The advantage is probably that this smart key will be used as the car key without needing a separate remote, limiting the situation of forgetting the remote, losing the remote, ... Although the price is low, it can be said that Toyota TA04 is enough to meet many needs for car protection and other utilities for motorcycle owners. Each brand, each type of lock has different advantages and disadvantages. Depending on your preferences, your budget allows you to choose the best anti-theft lock for your motorcycle. You can choose a smart, handy electronic lock that is commonly used, but you can also refer to other types of keys because they can also do the same function. Learn how to protect your wealth from the smallest habits.
Working Principle of Solar Street Lamp Smart Pole
That is, the solar panels if they are generating the required power, the rating the batteries, the lamps power intensity, the sensors if they are switching off and on to the lamps automatically, the erection of poles etc. As a general it is checking of the proper working of the project which is solar panel based street …Is it okay to do trot poles at this age?Four on the youngest. Any sooner than that, and they could need to get joint injections when they are older to keep them sound. Some horses do not thoroughly mature until around 5 years historical, so even at four i would be careful to not push the horse too tough. Definite, OTTB's (Off the track Thoroughbred's---although you generally knew what that stood for lol) could make nice jumpers. When you've got been using for eight years which you could absolutely handle a TB. But be certain to get a vet examine on any horse that you simply make a decision to get off the track, due to the fact they would possibly not have soundness problems now, however they are going to exhibit up sooner or later. I hope this helps!Is there any economical way to move the water from the Martian poles to the people?You do not need to. There's a lot of subsurface water ice at many mid-latitude sites, where that ice is easily accessible -- only a few meters down, sometimes even exposed, and mostly pureDoes anyone know if they make floats for fishing poles?Try a lanyard system. Tie it to you or a floatAre the magnetic poles shifting as we speak?"yes" and "soon" (because according to both the geological record and the magnetohydrodynamic simulations, we are in the "critical zone" as far as the time scale for pole reversal happening is concerned. [nb when pole reversal happens, there should be little to no consequences on modern life since all tech that used to rely on magnetic north now use GPS -- which is independent of the orientation of the earth's magnetic field.]Anyone know about Stripper/Dance Poles?wow you are rich. For the really good quality poles cost $500 and upWhat are the flame producing poles that stick out of the ground doing?On production rigs, its main purpose is to act as a safety device to protect from over-pressuring. It has a pressure release valve and the released gas is burned to keep it from igniting where you do not want it to igniteHow strong are my two ten foot poles?The structural design requirements of a bat house are equivalent to those of a flagpole.Option: Purchase a flagpole, attach the bat house and install per manufacturer installation requirements and sound engineering practice.Option: Design and erect the bat house support as a flagpole consistent with sound engineering practice. Sound approaches require demolishing the inadequate structureCan salt water fishing poles be used in fresh water?who knows, who cares. Merry ChristmasWhich bike is best among pulsar rs200 and thunderbird 350?These two bikes are poles apart when it comes to ride quality, feel and power delivery.The Pulsar RS 200 is refined, has a better throttle response and great high speed stability.Whereas the Thunderbird 350 is at a different segment which provides utmost comfort and is meant to be driven within 80 kmph to experience utmost comfort. Instead of taking a test ride you can try to either borrow the bike from your friend or rent it from a dealer for one day.Take it on a short ride with the city, then a 60 km long ride out on a highway.Do this for both the Rs 200 and the Thunderbird 350. Then conclude which suits you the best (Go by your heart do not go by the paper)Why does a star have so many magnetic poles?Stars are very turbulent compared to planets. Their entire ferromagnetic content is fluid gas which is rapidly boiling. This creates many smaller eddies of magnetic material, each of which has its own magnetic poles. Disclaimer: Not a physicist.What physicly causes our earths magnetic poles to exsist?The core of the earth is embed ed with iron in molten state and current flows through it creating a magnetic field at the poles
Solar Street Light Manufacturer, LED Street Lamp Supplier
Shenzhen Green Tech Lighting Co.,Ltd was founded in 2008, Certified with ISO9001:2008 management system. We are professional Outdoor lighting manufacturer in the LED semiconductive lighting industry who has been all the time devoted to the research, development, manufacturing, selling and design of LED Street Lamp, Solar Street Light, High Mast Light, LED Flood Light. Through hard working and continuous innovation, we have earned good reputation as one of the larger suppliers in China.Uknown high pitched 2 tone house noise?As with anything you have to go through the process of elimination. One evening when you hear the noise shut the house's electric it's quiet at the main. With the main off see if you can hear the sound. If you do not hear the sound with the main off then a speaker or another magnetic electrical device is causing the issue. If the sound continues go outside listen for a transformer or street lamp on a pole many times they will emit a noise when they are in the process of going. If that is not it then listen around the outside of the house to see if you can isolate the noise. As mentioned it could be a gutter or soffit. Or something else creating a reed noise in the wind. Lastly indoors with the electric off check for a pipe vibration noise and attempt to isolate it.Related rates help! A 6 foot tall woman walking at 4 ft/s away from 24 ft. street lamp. How fast is the..?If she starts under the lamp her shadow has zero length. In 1 second she will be 4 ft from the lamp. Looking from the side we can see 2 similar triangles - one triangle is formed from the connection of the top of the lamp, the bottom ofthe lamp and the far end of her shadow; the other from the top of her head, her feet and the end of her shadow. From this we can calculate that her shadow will be 1ft 3ins long so the speed at which her shadow will change must be 1ft 3ins in/secWhy does my body discharge so much electricity?This happens to most everyone who lives in dry northern climate found in Alaska and some parts of Canada west and northern central tier USA states.But some people do have more natural electricity. Even though I do medical and electronics I do not know the precise reasons why. I have been such a person at times. For example, just turning on lights I far more often than others cause them to burn out. At times I have set off those RFID chip detectors when exiting stores, even when having zero store items on board.I have heard believable stories about people who seem to have effects on street lamps just walking by. In 6th grade in Alaska the thoughtless boys would shuffle across floor (even better with wool sweater) and touch girls behind ear, the effect greatly enhanced with small magnet in fingers. ZAAAP ! Fortunately I became more conscientious and stopped. You would not want zappy unexpected blue spark yourself, but you get one reaching to put key in door at home, touching metal door handle and so on. Shuffling across wool carpet builds up a big charge of static electricity. Kids like experimenting with this a lot until the novelty of it wears off.In my old age I am studying and thinking about used and unused human forces and capabilities. Some of this in answers here. Check out Harry Oldfield stuff for some of the latest new science on that.BEING POLITE: You can discharge YOUR built up Static Charge by touching a metal desk or window frame (or some metal item) BEFORE shaking hands with another person and [Important !] BEFORE touching your computer. Touch the METAL CASE of your PC first, if it has one. Good idea to turn it OFF completely during bad lightning storm too. That is called discharging to "ground" and the electrons go through the ground prong when they leave your PC.Similarly you do NOT want to be wearing a lot of metal items, nor being tallest item about during lightning storm. Get off horse, do NOT stand under tree, nor flag pole, nor street lamp, nor be touching a metal fence ! ! ! The lightning is searching for best connection to "ground" see? Let that pathway NOT be you... The dog with metal chain should be detached from it and taken inside. Standing in mud or on high rocky place or in rain puddle during lightning is also a bad idea. Go inside car, and inside dry house or barn is better. Lightning likes tall items like CN Tower. A very good idea to keep your laptop in a foam lined metal case these days, for reasons I won't detail here. Does no good to protect it from awful damage, unless the metal case is kept completely shut with latch(es) fastened.Why does my body discharge so much electricity?.
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