dbuckley Posted June 11, 2007 Share Posted June 11, 2007 Hres a link to the The original press release, rather less sensationalist than the ripples that followed... Link to comment Share on other sites More sharing options...
mbthegreat Posted June 11, 2007 Share Posted June 11, 2007 Isn't it similar technology that does electric toothbrushes and that? Without any metal contact? Link to comment Share on other sites More sharing options...
dbuckley Posted June 11, 2007 Share Posted June 11, 2007 Nope, elekky toofbwushes use straightforward inductive coupling at 50Hz at very short range, no resonance required, whereas the WiTricity idea is heavy on resonance to achieve coupling over some distance. Much like RFID tags are powered and indeed how crystal radios manage to work. Link to comment Share on other sites More sharing options...
Ekij Posted June 11, 2007 Share Posted June 11, 2007 There is a big difference between transmitting power and transmitting power efficiently. I don't expect to see efficient wireless power transmission before fusion power. Sure it'll be great to avoid having to change the battery in the smoke alarm or the remote control but anything as power hungry as a theatrical lantern ... too inefficient to be practical (but perhaps OK for a small practical lantern ;) ) Mad Hippy, sign me up as a "do-gooder", I've concerns about having my brains fried. Link to comment Share on other sites More sharing options...
Seano Posted June 12, 2007 Share Posted June 12, 2007 I don't expect to see efficient wireless power transmission before fusion power.Or, perhaps more to the point, before room temperature superconductors - and questions in the lampy forum like: "I have a 100m socapex run to a bar of 6 x 2k fresnels - do you think I'll get away with 0.03mm cable, or will I need the full 0.1mm?" Link to comment Share on other sites More sharing options...
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