Talk:WiTricity

From Wikipedia, the free encyclopedia

This article should be WiTricity, not Witricity, similarly as WiFi. --62.240.180.1 10:56, 8 June 2007 (UTC)

Contents 1 Tesla 2 Physics background 3 Wavelength 4 Pronunciation

[edit] Tesla

this document should have in it the researches of Tesla who was the first to come up with the idea of wireless electricity transmission, and provide links to his biography. —Preceding unsigned comment added by Dokuro (talk • contribs)

It already does. --soum ^talk 15:29, 9 June 2007 (UTC)

Indeed it does reference Tesla (who did mostly failed attempts at efficient long distance wireless power transfer), but on the other hand the document also failed to mention near-field magnetically coupled Tesla coils. Quite a lot of other prior art is not mentioned, either. This actually is not surprising since the authors of the original MIT article have otherwise good backgrounds, but obviously not in basic electronics, RF design or electromagnetics, and unnecessarily re-did a lot of measurements that were done something like 100 years ago. Which is actually the main contents of their article, which reads like a final report from some student lab. No truly new developments, apart from a nice new name for the old wireless power transfer concept. Anyway I tried to Be Bold add some of those missing prior art things now. Needless to say, edit at will. Jwagnerhki 19:58, 14 June 2007 (UTC)

[edit] Physics background

It would be extremely informative to give some explanation of why this technology is efficient and previous attempts are not. Is it true that previous attempts radiate energy equally in all directions, regardless of whether or not there is a power receiver nearby? Is it true that this technology avoids that problem? -- Beland 19:07, 15 June 2007 (UTC)

Near and far field says as much, so I added that to the article. -- Beland 18:41, 17 June 2007 (UTC)

At the Home Page of Marin Soljačić(researcher team leader) on MIT you can find the most relevant materials about WiTriciy. I added the link to the article Brunomsantiago 06:27, 23 June 2007 (UTC)

[edit] Wavelength

The extent of the near-field is related to wavelength, not distance. Thus I suggest:

"the receiving devices must be within medium range (few meters) from the transmitter. The system uses a relatively low frequency (few MHz)." should read something like:

"the receiving devices must be no more than about a quarter wavelength from the transmitter, that is a few meters at the relatively low frequency of a few MHz used by the system." - GilesW 23:02, 30 September 2007 (UTC)

[edit] Pronunciation

What is the correct pronunciation of WiTricity? It is correct to assume is pronounced like Why-tricity? Quacks Like a Duck (talk) 20:38, 26 May 2008 (UTC)