GravityLight is a pretty neat idea. "GravityLight is unique - it doesn't need batteries or sunlight and costs nothing to run. It takes seconds to lift the weight that powers GravityLight creating 20 minutes of light on its descent."
GravityLight is a pretty neat idea. "GravityLight is unique - it doesn't need batteries or sunlight and costs nothing to run. It takes seconds to lift the weight that powers GravityLight creating 20 minutes of light on its descent."
3 comments:
This is so basic, I'm surprised I haven't seen it before. It's like a grandfather clock, but with light.
Yup. I wonder if a pendulum mechanism wouldn't work better?
The pendulum on a clock is just a regulator. The power comes from the weights (or springs). I'm assuming the light regulates the power through friction of the generator, which would produce a continuous output rather than the oscillating output of a clock (or a blinking light). Using friction has some downsides in terms of wear, and it appears their revised version tries to address these.
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