Nick Palmer wrote:
> <<Connect a noisy resistor across a red LED and it will emit red photons>>
>
> I don't know if anyone mentioned this before but surely the "noisy
> resistor" is only noisy when a current is flowing through it - which
> takes a voltage - which needs energy input to sustain it - which will
> probably at least match, and most likely exceed, the energy extractable
> from the "red photons" - no free lunch...
>
> Nick Palmer
You should read about different types of noise -->
http://www.aikenamps.com/ResistorNoise.htm
Thermal voltage noise is *independent* on current. Furthermore, there is no
upper crest limit to *true* thermal noise. There is free lunch for intelligent
beings. :-)
Regards,
Paul Lowrance
