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How cool are these news devices that run on radiowaves from the air, without bat

  1. Daniel J. Neumann profile image61
    Daniel J. Neumannposted 7 years ago

    How cool are these news devices that run on radiowaves from the air, without batteries?

    http://www.nytimes.com/2010/07/18/busin … technology

  2. lxxy profile image60
    lxxyposted 7 years ago

    They are interesting, but do present problems. Sorta like wireless electricity, in general. I think a better study would be zero point energy. Now that would be a technology to master!

  3. dabeaner profile image58
    dabeanerposted 7 years ago

    Are they reviving the "crystal set"?  I use to make them when I was a kid with a germanium crystal and contact wire, along with wrapping wire around an oatmeal carton, earphones, etc.

  4. SteveoMc profile image72
    SteveoMcposted 7 years ago

    dabeaner   I remember the crystal sets....there was no power source but you could listen to the radio....woohoo, and they think that all this techie stuff is new.

 
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