Re: Will Radio Engineering be QM's worst nightmare?

bz wrote:
> I beg to differ with you. I have fixed many a loud music lover's HI-FI amp
> because the load was removed. High voltages occur across output
> transistors and blow them.

Then your amplifier has inherent resonances. If so then it's a poor
design. It's current that blows amplifiers, not voltage. What are you
doing, arching 10,000 volts? My example used a one volt amplifier.
Where's this discussion going anyway? Nowhere it seems.



> At UHF frequencies, again, you are likely to blow the output transistor
> stage unless it is specifically designed to work with everything from
> nominal load to open load.

Never seen it happen. What are you doing, turning up a 2500 watt amp
that's generating so much internal voltage that it arcs? That doesn't
fit the circuit I described by no means.


> > I am placing voltage source on it, ~10 uV. Do the math and
> > you look at the NEC2 numbers and you'll see that it theoretically
> > generates less than a single photon.
>
> If it generates less than a single photon then you will probably never
> radiate any photons (other than thermal noise photons which will certainly
> swamp any possiblility of detecting any you might radiate)

Okay, welcome to the discussion. That is my question after all.
Thermal noise can be overcome with drop in temperature. I read they
use that technique in astronomy when detecting probes that are far out
in our solar system. Some of the probes radiate surprisining small
amount of power on a wide beam antenna so they need extremely sensitive
radio detection methods.



> > You can if you use multiple samples and feed it through software, but
> > that's still not the point.
>
> Only if you know when the photons are going to be emitted.

I agree.


> With power too low to create photons from the driving power, you are going
> to have to wait for a thermal phonon to come by at the right time to add to
> the applied voltage. That will be be so random that you won't be able to
> tell it from the background noise unless you are pulsing your transmitter.

Are you still talking about multiple samples. The more samples you
take of noise then less the noise signal becomes. Double the samples
and you decress the noise by half. As you know that's because the
noise has a plus and minus amplitude. Since the noise is random it
nulls out. When you know the timing of the incoming signal then you
know when to add. It is a sure method if you have the time to sample.
The software adds each signal to the previous total. For large samples
you would probably use a double float variable array. When finished
the program divides the each total sample by the sample amount, which
gives you an accurate value. I am a computer programmer so I know that
much.


> If you are trying to say that QM is violated because you radiate 900 MHz
> photons when the drive is too low to do so, I think you are going to end up
> falsifying your own theory.

Oh heaven forbid anyone challenge QM! :-)


> > If you are concerned about thermal noise
> > then you can use near zero K temperatures.
>
> You want your transmitter, your receiver, your antennas, and everything
> around to all be near zero K?

You're the one talking about a receiver. I am talking about
transmitted photons. If you have too much noise and you want to
analyze each cycle then yes you'll need to drop the temperature. Near
zero K is no big deal BTW. Are we going to argue about that one also?



> OK, you can probably build a low temp chamber and do your testing in it.
>
> You might even detect single photons at 900 MHz.
>
> That would be worth a paper but I doubt you will invalidate QM.

I am only searching for theory options. So far I've seen two types.
One is that there will be no radiation resistance. Another is that
there will only be radiation resistance once every x cycles.
Personally I would love to see this on a scope on a low temp chamber.
What would you expect to see on the scope? Draw us a mental picture
what the received signal would look like? If nothing, then what would
a single photon signal look like? Would the voltage be in large
quantum steps and appear like a square wave? Would the sin wave be
nice rounded like a typical sine wave? Remember, we're talking about a
single photon.

.

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