Wireless Power

The BBC has an interesting article on the promise of wireless power — that is the ability to not have to hitch up to a powercord to recharge an otherwise wireless device. Sounds interesting but makes me wonder about adding even more electronic smog into our personal environments.

The concept exploits century-old physics and could work over distances of many metres, the researchers said.

Although the team has not built and tested a system, computer models and mathematics suggest it will work.

“There are so many autonomous devices such as cell phones and laptops that have emerged in the last few years,” said Assistant Professor Marin Soljacic from the Massachusetts Institute of Technology and one of the researchers behind the work.

“We started thinking, ‘it would be really convenient if you didn’t have to recharge these things’.

“And because we’re physicists we asked, ‘what kind of physical phenomenon can we use to do this wireless energy transfer?’.”

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