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If you thought wireless charging devices were a recent invention you'd be wrong. They are older than the Ford Model T.
In 1831 English physicist Michael Faraday discovered the principles of induction charging, which can transfer energy wirelessly between two receivers. In the late 1800s Nikola Tesla, a Serbian-American inventor, electrical engineer, mechanical engineer, and futurist, used Faraday’s principles to create the Tesla coil prototype that powers a neon sign without any wires—and that's what's going on inside your smartphone when you place it on a wireless charger. The Tesla coil has been on display at the Griffith Observatory since 1937. See a demonstration below:
It's probably time I got myself a wireless charging device.
Read more: Neatorama
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