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Wireless electrical power tranmission.

  1. Aug 22, 2008 #1
    For those of you that don't read yahoo news, there was an article this morning about Intel developing wireless power transmission. Article Here

    Apparently there was a demonstration where they lit up a 60watt light bulb across the stage but gave no numbers of efficiency or strength of the field. However, the article states that they are using magnetic fields instead of electric fields to transmit this power. They apparently do this because humans are not affected by magnetic fields but are affected by electric fields.

    I know Tesla was able to transmit power wirelessly and reported doing it with an efficiency of 95% IIRC. There was also his "dream" of providing wireless free energy to everyone in the world by tapping the outer atmosphere charged by solar wind which was the purpose of Wardenclyffe Tower. However, as far as I know no one has been able to achieve efficiency anywhere near what Tesla has claimed nor do it for the distance he has reportedly done it either. Is it actually possible that this could be done using magnetic fields without interfering with electronic devices like laptops and phones and such. Alternating magnetic fields just don't seem like they would be able to achieve what Intel claims they can with out side affects to the environment they are in. My EM understanding isn't the strongest, so could someone shed light on how Intel might be able to achieve their claims?
     
  2. jcsd
  3. Aug 22, 2008 #2
    A bit more information. Now that I see the actual demonstration, I'm less impressed.

    [​IMG]
     
  4. Aug 22, 2008 #3

    stewartcs

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    Science Advisor

    MIT has been working on this.

    http://web.mit.edu/newsoffice/2007/wireless-0607.html

    CS
     
  5. Aug 22, 2008 #4

    uart

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    Oh yes, lets unnecessarily subject ourselves to even far greater amounts of E/M fields, of unknown overall biological effect, than the large amount we already have. That hardly sounds like utopia to me.
     
  6. Aug 22, 2008 #5
    see also http://powercastco.com/
     
  7. Aug 22, 2008 #6
    You guys beat me to this.

    How on earth does this work? I must confess I'm totally clueless as to how this is possible. Are photons being exchanged and used to generate the current in the destination device? How does it get such high efficiency?
     
  8. Aug 22, 2008 #7

    russ_watters

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    Staff: Mentor

    With all the conspiracy theory and crackpottery about Tesla out there, we must be careful to differentiate what Tesla claimed to have done with what others claim Tesla did. Those don't sound like claims Tesla would have made to me.
     
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