How batteries work - Adam Jacobson
View full lesson: http://ed.ted.com/lessons/why-batteries-die-adam-jacobson Batteries are a triumph of science—they allow smartphones and other technologies to exist without anchoring...
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You probably know the feeling. Your phone utters its final plaintive "bleep" and cuts out in the middle of your call. In that moment, you may feel more like throwing your battery across the room than singing its praises, but batteries are a triumph of science. They allow smartphones and other technologies to exist without anchoring us to an infernal tangle of power cables. Yet even the best batteries will diminish daily, slowly losing capacity until they finally die. So why does this happen, and how do our batteries even store so much charge in the first place? It all started in the 1780s with two Italian scientists, Luigi Galvani and Alessandro Volta, and a frog. Legend has it that as Galvani was studying a frog's leg, he brushed a meta...
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You probably know the feeling. Your phone utters its final plaintive "bleep" and cuts out in the middle of your call. In that moment, you may feel more like throwing your battery across the room than singing its praises, but batteries are a triumph of science. They allow smartphones and other technologies to exist without anchoring us to an infernal tangle of power cables. Yet even the best batteries will diminish daily, slowly losing capacity until they finally die. So why does this happen, and how do our batteries even store so much charge in the first place? It all started in the 1780s with two Italian scientists, Luigi Galvani and Alessandro Volta, and a frog. Legend has it that as Galvani was studying a frog's leg, he brushed a meta...
