A more informative video on the subject of witricity here: http://www.ted.com/talks/eric_giler_demos_wireless_electricity.html
Transfer efficiency is not 5% like John suggested but more like 50% and growing. I suspect the energy loss compared to traditional solutions will be globally more than made up by the savings in disposable batteries or rechargeable battery cycles in many nomadic battery powered applications such as hearing aids and cell phones. Not sure about electric cars though, unless the efficiency can be significantly improved, which I guess can be done by bringing the coils closer together (either the coil in the car or that in the floor could be mobile and automatically brought into close proximity of the other one before charging begins). Michel 2009/9/15 OrionWorks - Steven Vincent Johnson <[email protected]>: >> From: John Fields >> >> On Mon, 14 Sep 2009 16:11:48 -0400, you wrote: >> >> >As John Fields says, this is a harebrained scheme. >> > >> >My guess is that if the power is high enough to useful work, they >> >will eventually discover it can harm your health. >> > >> >I suppose there are some narrow applications that would benefit from >> >this technology. >> >> --- >> You're right; there are. >> >> One of them is battery powered toothbrushes with resting stations that >> allow recharge of the cells, in the toothbrush, between brushings >> without the need for ohmic contacts between the load and the source. > > I suspect medical implants, like pacemakers would benefit as well. I believe > they are working on this. > > Regards, > Steven Vincent Johnson > www.OrionWorks.com > www.zazzle.com/orionworks > > >
