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Browsing the "potentiometer" Tag

Quantum Tunneling Composites Lead to a More Efficient Flashlight, And More!

July 8th, 2011 | by Aaron Fown

Most of us have grown up in an environment where power comes from a plug in the wall, and lights are fixtures or lamps that take advantage of that system. But in many parts of the world, this infrastructure doesn't exist, and so people spend a lot of money on dirty, smelly Kerosene to light their houses at night. Something so simple as a bright, dependable LED flashlight can be an excellent leapfrogging technology for people in such places, as it can provide clean, safe light that can be 'filled up' with a tiny solar battery charger



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