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???
12/17/06 18:49
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 		 #129644 - Sort of
Responding to: ???'s previous message
Some RFID tags work by the energy they receive through their antenna.

A "crystal set" radio produces sound direct from the received radio signal with no batteries or power supply.

But these are not just random signals - this is receiving specific transmissions.

If the field strength were strong enough to give enough power to charge batteries, etc, it would probably be dangerous to your health!

List of 44 messages in thread
TopicAuthorDate
making energy from noise and RF            01/01/70 00:00      
   I think you need to read up on thermodynamics            01/01/70 00:00      
   Sort of            01/01/70 00:00      
      Different cases            01/01/70 00:00      
         In fact            01/01/70 00:00      
            Sheds and crystal palace            01/01/70 00:00      
   Energy Harvesting            01/01/70 00:00      
   Possible ...            01/01/70 00:00      
      Consensus?            01/01/70 00:00      
   Tesla who wanted to transmit power via radio.            01/01/70 00:00      
      Nutter??            01/01/70 00:00      
         Mathsh            01/01/70 00:00      
   TV Transmitter            01/01/70 00:00      
   Harness Energy wasted on Dead Threads            01/01/70 00:00      
      drive by ...            01/01/70 00:00      
         thank            01/01/70 00:00      
            It is not that easy            01/01/70 00:00      
   Power from RF            01/01/70 00:00      
   Short circuit!            01/01/70 00:00      
      I meant...            01/01/70 00:00      
         i think in other noise source            01/01/70 00:00      
            back to stoneage..            01/01/70 00:00      
               Waterfalls ?            01/01/70 00:00      
                  Overcomplicated            01/01/70 00:00      
                     True            01/01/70 00:00      
                  Waterfalls ?            01/01/70 00:00      
                  Kelvin's Thunderstorm?            01/01/70 00:00      
                     Kelvin's Thunderstorm            01/01/70 00:00      
                     Got to be done            01/01/70 00:00      
            Why you don't look it the other way            01/01/70 00:00      
            Just how many kWH/yr are wasted in line-losses?            01/01/70 00:00      
               Power line losses            01/01/70 00:00      
                  How about an approximation?            01/01/70 00:00      
                     best usage of resources            01/01/70 00:00      
                        yes, but is it 99% or is it .0001%            01/01/70 00:00      
               Numbers            01/01/70 00:00      
                  total losses            01/01/70 00:00      
                  So ... someone DOES know ...            01/01/70 00:00      
                     Solar cells            01/01/70 00:00      
                        and            01/01/70 00:00      
               Cu vs Al for transmission lines            01/01/70 00:00      
                  Yes, it's cheaper ...            01/01/70 00:00      
                     Time will tell            01/01/70 00:00      
            Electrostatics            01/01/70 00:00      

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