Led solar street light price of 60 w

For this problem, in general physics is studied people who do not pass, because according to the law of conservation of energy, this is impossible, unless the power several times greater than the solar street light, the light and the light is particularly strong, can achieve the result of sunshine during the day. Unfortunately electric

we at the time of installing solar street light, often encounter such problems, solar street light with the light exposure can charge?

for that matter, is in general physics learning of people who do not pass, because according to the law of conservation of energy, this is impossible, unless the power several times greater than the solar street light, the light and the light is particularly strong, can achieve the result of sunshine during the day.

solar panel efficiency is about 17%, if it is 30 watts of solar street light, if we can generate enough solar street lamps use, you need at least 170 watts of the light to illuminate, and 170 watts of electric light all the electrical energy into light energy. Unfortunately the light to electricity conversion rate is only 5%, so you need to incandescent lamp for more than 3400 watts of power,, and make sure all the light shines on the solar panels on!

can actually do it? Our answer is impossible, we have done the experiment, can achieve the same effect as the sun, need to use more than 5000 - watt incandescent lamp to complete the task.