Can you imagine never having to charge any of your wireless devices? You could go anywhere and do anything on your mobile devices because you wouldn't have to worry about plugging them in somewhere to recharge. Well thats what Nokia is trying to do with their new cell phone prototype.
It is far from the wireless nirvana of never having to recharge your device and having limitless power on your mobile device, but its definitely a step in the right direction. The device works by collecting all of the ambient radio waves that constantly bombard us at all times like waves from T.V., radio, and cell phones and it converts them into an electrical current inside the phone to power the device and charge the battery. Pretty crazy huh? The receiver doesn't operate on only a few frequencies like a radio would, but rather it operates from 500 megahertz all the way up to 10 gigahertz! The idea behind the broad spectrum of frequencies is that no one wave offers that much energy, so it must collect as much as it can from any source available.
Right now the technology is pretty weak and is only able to harness about 5 milliwatts of energy. They have a short term goal of reaching beyond 20 milliwatts of energy, thats enough to keep a phone in standby mode eternally. Their ultimate goal of course is to reach beyond 50 milliwatts of energy, or enough to keep a phone on in use.
Essentially, the future is coming closer and closer to reality all the time (duh, that was the most obvious thing I've ever heard), but Nokia says they will have a model out on the market in the next 3-5 years (they are the putting a time frame on when you can expect the future to be available to you).
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