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Quote from: CrazyScientist on 26/06/2021 21:15:15And this:https://www.eenewseurope.com/news/light-trap-turns-photons-massive-quasiparticlesIf you put enough mass in a small enough space, it collapses.That's still true if it's in the form of massive quasiparticles.You seem to be arguing against yourself.
And this:https://www.eenewseurope.com/news/light-trap-turns-photons-massive-quasiparticles
Where exactly it is mentioned in that article?
But you can't simultaneously receive multiple AM/FM stations at similar wavelenghts using one antenna - can you?
Besides "to collapse" mean different things in QM and in GR - collapse of a wavefunction have nothing to do with a gravitational collapse into a BH...
This means, that it should be possible to simultaneously detect multiple photons at similar frequencies, that are overlaping each other in a single volume of space..
Quote from: CrazyScientist on Today at 20:25:35Quote from: Bored chemist on 20/06/2021 15:06:01Instead of answering, you cam up with this toshQuote from: CrazyScientist on 14/06/2021 17:11:04I guess, you slept during physics classes, when the Newton's laws of motion were discussed... If you wouldn't sleep, you would know, that to slow down an object, that moves at constant velocity, you need to use a force - so photons, which are slowing down the mirror are giving up their own energy... It's basic physics - aren't you ashamed to not know such things?It's because you insist to use the baseball analogy, which doesn't have anything to do with cavity QED, which SHOULD be used, to solve the presented scenario...Quote from: Bored chemist on 20/06/2021 15:06:01Now, since you framed your bilge in terms of high school physics, then, regardless of any weirdness due to quantum effects, it should work in terms of high school physics.But you say that if a ball exerts a force on a moving bat, the bat will gain energy (yet it slows down) and the ball will lose energy (though its speed increases).Do you really believe that?Please don't waste time on energy losses and coefficients of restitution- this is an ideal, perfect mirror.There are no losses.Not only you still keep insisting to use this invalid analogy, but you also keep using a 3rd frame of some batsman guy, which can't be applied to interactions between the mirror (baseball bat) and the photon (ball). And what makes your baseball analogy completely wrong, is the fact, that photons suppose to move at a constant velocity of c, while in the rest frame of mirror, those photons are in fact causing acceleration opposite to the constant motion in your 3rd batsman frame...So, are you still saying that the point of a cricket bat is to slow the ball down?It's a simple yes or no.You are the one who was going on about sleeping through school science; not me.Why did you get that school science wrong?
But my point about hooking a spectrum analyser to an antenna overrides it anyway.Your "reply" And then, when you try to receive one specific wavelenght in a given frequency band, photons placed around your antenna will collapse to that specific state " makes no sense.The spectrum analysis works.So it's receiving many channels at once.It would be obvious from time to time when the AM radio stations broadcast a minute's silence- all the peaks would drop to zero simultaneously.You can see the intensity of the broadcast at each frequency. So they are resolved; they are no longer in a superposition.It proves that it's possible.It's also common practice for blocks of flats to have a single aerial feeding to all the flats.You are trying to say that these don't exist.https://www.screwfix.com/c/electrical-lighting/splitters/cat4740084And that's silly.
Quote from: CrazyScientist on 26/06/2021 22:20:49But you can't simultaneously receive multiple AM/FM stations at similar wavelenghts using one antenna - can you?Yes, you can.That's why you can buy antenna splitters.It's why people in blocks of flats can choose different radio stations, and it's why a spectrum analyser can record the signals from two different radio stations at the same time.
So, are you still saying that the point of a cricket bat is to slow the ball down?It's a simple yes or no.You are the one who was going on about sleeping through school science; not me.
Please don't waste time on energy losses and coefficients of restitution- this is an ideal, perfect mirror.There are no losses.
"An informal, heuristic meaning of the principle is the following: A state that only exists for a short time cannot have a definite energy. To have a definite energy, the frequency of the state must be defined accurately, and this requires the state to hang around for many cycles, the reciprocal of the required accuracy. For example, in spectroscopy, excited states have a finite lifetime. By the time–energy uncertainty principle, they do not have a definite energy, and, each time they decay, the energy they release is slightly different. The average energy of the outgoing photon has a peak at the theoretical energy of the state, but the distribution has a finite width called the natural linewidth. Fast-decaying states have a broad linewidth, while slow-decaying states have a narrow linewidth"And that tells you that an observation made in a finite time will only give you an uncertain assessment of the energy.So the energy is (like momentum or position) always uncertain.And that means the wavelength is always uncertain.
Not for a standing wave inside a resonant cavity, where photons can remain at one frequency in a prolonged period of time:
No. The point of a cricket, is (probably) to get a better score, than the opposing team,
Generally, it's possible to watch different TV channels on couple receivers using a single antenna,
Phew! I went through a tone of info about TV antennas and receivers.
Quote from: CrazyScientist on 27/06/2021 06:25:03Not for a standing wave inside a resonant cavity, where photons can remain at one frequency in a prolonged period of time:OK so let's try and get back to the original problem.If you have some photons in a cavity ( exerting some radiation pressure on the walls of the cavity) and you cormpress it, you do work against that pressure.Where does that energy go?My contention is that it increases the energy of the photons they bounce off the mirror with slightly reduced wavelengths.And you say it does something which is impossible by definition.[/qutote]
Quote from: CrazyScientist on 27/06/2021 06:05:38Generally, it's possible to watch different TV channels on couple receivers using a single antenna,Finally! the light dawns.I said that all along.You were the one who wrongly insisted otherwise.
Now, can you see if you can work on your understanding of the conservation of energy.The moving mirror does work on the photons.So it must increase their energy.
And them maybe we can get you to recognise that QM means that the size of the cavity is uncertain, and the wavelength of the photons is uncertain. so there's no way to say, precisely, if they are the same (or if one is a integer multiple of the other).
it's sipmly impossible to use an analogy to baseball or cricket and end up with any kind of a valid result...
I guess, you slept during physics classes, when the Newton's laws of motion were discussed... If you wouldn't sleep, you would know, that to slow down an object, that moves at constant velocity, you need to use a force - so photons, which are slowing down the mirror are giving up their own energy... It's basic physics - aren't you ashamed to not know such things?
Quote from: CrazyScientist on 27/06/2021 06:05:38Phew! I went through a tone of info about TV antennas and receivers.You should have just believed me.I have two radios by my bed, They both work.I listen to the same station on both of them, but I tune them to different frequencies.They are FM radios so the frequency is about 100MHz.I just checked. The centres of the radios are 28 cm apart.That's less than lambda /10 so, for radio wave / antenna purposes they are "in the same place".And they both work.(and, in case you wondered, because they are on different frequencies, interference on one typically doesn't affect the other so, on average, I get a better signal to listen to.)
What frame are you talking about here?
Quote from: CrazyScientist on 28/06/2021 21:16:45 it's sipmly impossible to use an analogy to baseball or cricket and end up with any kind of a valid result...You mean... like Newton's laws?Well then, why did you post about them then?Quote from: CrazyScientist on 14/06/2021 17:11:04I guess, you slept during physics classes, when the Newton's laws of motion were discussed... If you wouldn't sleep, you would know, that to slow down an object, that moves at constant velocity, you need to use a force - so photons, which are slowing down the mirror are giving up their own energy... It's basic physics - aren't you ashamed to not know such things?
Also there are different mechanics of interference for AM and FM waves
Quote from: Bored chemist on 28/06/2021 21:51:22Quote from: CrazyScientist on 28/06/2021 21:16:45 it's sipmly impossible to use an analogy to baseball or cricket and end up with any kind of a valid result...You mean... like Newton's laws?Well then, why did you post about them then?Quote from: CrazyScientist on 14/06/2021 17:11:04I guess, you slept during physics classes, when the Newton's laws of motion were discussed... If you wouldn't sleep, you would know, that to slow down an object, that moves at constant velocity, you need to use a force - so photons, which are slowing down the mirror are giving up their own energy... It's basic physics - aren't you ashamed to not know such things?Because for some reason you keep going back to cricket and baseball, even if it doesn't make any practical sense
I obviously jumped into a pretty deep water with some of my statements, which I've unnecessarily made without a prior research - and now once again I've had to go through couple hundreds different sites, to adress all of this in a somehow proper way...