Comment on Gravity Light - Alternative form of lighting to replace KeroseneparentComments−nohat13yWith perfect efficiency a 10 kg weight lifted 2 meters would only output about a tenth of a watt over half an hour. That is indeed enough for a led, but not a very powerful one. I doubt this is worth it.−pdonis13ySee the numbers upthread; it's comparable to a kerosene lamp.
Comments
With perfect efficiency a 10 kg weight lifted 2 meters would only output about a tenth of a watt over half an hour. That is indeed enough for a led, but not a very powerful one. I doubt this is worth it.
See the numbers upthread; it's comparable to a kerosene lamp.