Duke Univ. Device Converts Stray Wireless Energy Into Electricity For Charging 216
Lucas123 writes "Engineers at Duke University say they've constructed a device that can collect stray wireless signals and convert them into energy to charge batteries in devices such as cell phones and tablets. The WiFi collection device, made of cheap copper coils and fiberglass, can even aggregate energy from satellite signals and sound waves (abstract). The researchers created a series of five fiberglass and copper energy conductors on a circuit board, which was able to convert microwaves into 7.3V of electrical energy. By comparison, Universal Serial Bus (USB) chargers for small electronic devices provide about 5V of power. The device, the researchers say, is as efficient as solar cells with an energy conversion rate of 37%."
Units! (Score:5, Funny)
Too bad (Score:5, Funny)
This summary had such potential, too.
Re:Too bad (Score:5, Funny)
Re:Units! (Score:5, Funny)
Re:Units! (Score:4, Funny)
Just relax and drink a few amperes of beer. That'll help.
Resistor (Score:5, Funny)
Hey, I can get -174 dBm/Hz from a 50 Ohm resistor too. Free energy!
Re:Units! (Score:5, Funny)
And if I scuff my feet while walking across the room, I can generate TWENTY! THOUSAND! VOLTS! OF! ENERGY! Someone hook me up to the power grid!
Re:Too bad (Score:5, Funny)
Re:Too bad (Score:4, Funny)
At least this headline is current.
Re:Units! (Score:5, Funny)
You're not helping.
Re:Amps? (Score:3, Funny)
Approximately zero.
This signal followed me home - can I keep it? (Score:3, Funny)
Engineers at Duke University say they've constructed a device that can collect stray wireless signals
WTF is a "stray wireless signal"? This is a signal without an owner? Slipped out of its collar?
Re:Units! (Score:5, Funny)
Re:Units! (Score:2, Funny)
Re:Too bad (Score:2, Funny)
Seriously, I'm dyne-ing here. Joule have to come up with a better joke next time.