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Wireless charging explained: What is it and how does it work?

October 31, 2017

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Wireless charging technology has been around for more than 100 years, but its inclusion in devices such as Apple’s new iPhone line has given it new life. Here’s how it works, and why it could soon show up in everything from homes to robots.

Wireless charging has been around since the late 19th century, when electricity pioneer Nikola Tesla deomnstrated magnetic resonant coupling – the ability to transmit electricity through the air by creating a magnetic field between two circuits, a transmitter and a receiver.

But for about 100 years it was a technology without many practical applications, except, perhaps, for a few electric toothbrush models.

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