What is Mechanically powered torch?
[[File:US Navy 100124-N-6214F-019 A Haitian child uses the hand crank on his multi-purpose self-powered radio.jpg|thumb|A boy winds the crank on his mechanically powered torch radio.]] A '''mechanically powered torch''' is a [[torch]] that is powered by [[Mechanical energy|mechanical movement]], such as winding a spring and using the stored energy to power it for a small amount of time. It has the advantage of not needing [[battery|batteries]] to operate. ==Related pages== *[[Clockwork radio]] [[Category:Machines]] [[Category:Light sources]] {{tech-stub}}