Gravity power
February 26th, 2008 by rbanks
The gravity powered floor lamp
“The column contains five ten-pound brass weights that rest on a sled; when set in place by the user, they drift to the bottom of the lamp over the course of four hours. A high efficiency ball-screw converts the downward motion into torque, which is used to power a rotor. The rotor, housed in the base of the lamp, powers the light. The LEDs are activated only a few seconds after the process begins, and the entire operation is silent.”
Gizmag
hren Says
This makes no sence – to start this thing over
again you will waste all the energy you gain from it
by using some force to place the weights on top
May 22nd, 2009 at 6:40 pm