wireless power?

Its been years since I first came across the idea.

I was high as a kite, drunk staring into the mirror. There it was the Sonicare. It was recharging in its home cradle. I must have stared at it for about 20 minutes before taking it out and rubbing it on my cheek. Feeling for static, warmth or anything. I placed it back into the charging position. Then continued to pull half way out watching when it would stop charging and at what point it would continue the charge. Without a metal connection, with water, and without. It still charged seamlessly.

Imagine this in a mass scale such as in the walls of the house. Allowing any device to have power. Setting a frequency range would allow ONLY devices in your frequency to carry the power. Disallowing your neighbors stealing your electric with they're wireless power devices.

With the same technology we can allow devices to fly/float seamlessly, and be powered at the same time.

 

Oh, it exists already. It's a bit tricky, as the frequency range has to be very specifically tuned, and if you walk between your device and the source it will interfere with power transmission. It also is an unresolved question as to whether or not it's a good idea to be around that strong an EM field all the time. There's one company that I read somewhere that is working on getting that kind of power transfer going for televisions IIRC.

What you saw with your sonicare is called magnetic induction. It's pretty damn cool; in brief: either a moving conductor in a stationary magnetic field, or a stationary conductor in an oscillating magnetic field, will generate a current in the conductor. It's also the basis for induction cooktops, that are both incredibly efficient with respect to power transfer and also much safer than other cooking surfaces.