I don't quite understand HOW does it turn the weight into energy. Could someone ... | Hacker News

Hacker News new | past | comments | ask | show | jobs | submit

login

cr1st1an on Dec 21, 2012 | parent | context | favorite | on: A $5 Lamp Powered Solely by Gravity

I don't quite understand HOW does it turn the weight into energy. Could someone enlighten me?

RandallBrown on Dec 21, 2012 [–]

the weight is on a string. That string is connected to a crank that turns a generator as it falls.

cr1st1an on Dec 25, 2012 | [–]

Oh, and as I understand, the amount of weight is important due the resistance of the crank?

Join us for AI Startup School this June 16-17 in San Francisco!
Guidelines | FAQ | Lists | API | Security | Legal | Apply to YC | Contact