Phones can run out of juice at the worst times. Orange, a French telecom giant, has been working on a shirt that can convert sound waves into electrical energy.
The shirt, dubbed Sound Charge, is a charging dock for mobile phones. According to the press release, the shirt works by "reversing the use of a product called piezoelectric film".
Piezoelectricity produces electricity from pressure. The shirt uses an "A4 panel of the modified film" to absorb sound waves which are then converted into an electrical charge "via the compression of interlaced quartz crystals." That charge is then fed to a reservoir battery which transfers the charge to the phone.
The shirt was developed in time for the Glastonbury festival this week. Orange will be conducting live tests of the shirt during the musical performances to help determine which bands "are the best to charge to".
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