[OT] Power over radio is it a true thing or just a myth ?

[Boris shtrasman]

Michael Vasiliev wrote:
> The power of the signal is inversely proportional to the square of
> distance. Why do you think such a feat would be possible?
>   
Since i don't know physics i lake the basics for this question.

As i understood from googling it is possible to get some  power from 
high power radio signals (1).
Since i believe that radio broadcasting (AM) allow power transfer i ask 
about other types of transmittance.
I guess this will be true only for analog transition since i believe 
that with digital some one will lower the amount of power for the 
signal, is my guess correct ?

After reading part of a book in a close area i start to understand that 
it is a myth to use Wi-Fi as a power generation , the question about 
Terrestrial and Wi-Max still exists.

> Boris shtrasman wrote:
>   
>> Sorry for the OT ,
>>
>>
>> But i guess using systems in other ways then they had been designed is
>> a bug that not only i posses.
>>
>>
>> I heard a lot about wireless power transition , while I heard about
>> products that provide close distant power  transmitting (1) what about
>> using public wifi in my area ?
>>
>>
>> I met many people that  "heard" about some one that know some one that
>> has access to device that uses radio signal to transfer low amount of
>> power in short ranges.
>>
>>
>> As i googled about it i guess it can be done using rectennas but only
>> in close range to _High_ power radio transmitters (2)
>>
>>
>> My question is it possible to be done with small radio signal
>> equipment as Wi-Max and Wi-Fi ,Perhaps even with the new terrestrial
>> transitions.
>>
>> Do any one have links to this kind of devices ?
>>
>>
>> (1)
>>
>> http://www.economist.com/sciencetechnology/tq/displayStory.cfm?story_id=13174387
>>
>>
>> (2)
>>
>> http://www.telegraph.co.uk/technology/3336114/Over-to-you-Mythical-electricity.html
>>
>>
>>
>>
>> 10x in advance.
>>
>>     
>
>   


-- 
 ------------ Boris Shtrasman -----------------
| IM       : borissh at jabber.org                |
| URL      : myrtfm.blogspot.com               |
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