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It doesn't mean, that I'm completely wrong here, but the subject is just far more complicated..
But you can't simultaneously receive multiple AM/FM stations at similar wavelenghts using one antenna - can you?
How can the size of cavity be uncertain,?
Quote from: CrazyScientist on 28/06/2021 21:16:45What frame are you talking about here?The laboratory frame.I have a box on teh bench with photons bouncing round it it.I compress the box.In doing so, I do work on the mirrors and they do work on the photons.Where does that energy go?Here's a hint; it has to go somewhere, and it can't be absorbed by the mirrors.
What frame are you talking about here?
Here's another hint.It is the equivalent of heating a gas by compressing it.
Because of the uncertainty principle.
And where goes the momentum of waves, which get cancelled out due to their destructive interference?
Quote from: Bored chemist on 28/06/2021 22:07:34Because of the uncertainty principle.Cavity isn't made of photons - it's a fully defined physical object. You make a cavity at a specific size and you keep having it at this specific size
Quote from: CrazyScientist on 28/06/2021 21:16:45 It doesn't mean, that I'm completely wrong here, but the subject is just far more complicated..Yes it does.You said thisQuote 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?which is completely wrong.
You need to read about the Joule-Thompson effect in Wikipedia.
Yeah - I was wrong.
that you can't overlap two EM fields at the same bandwidths in one volume of space
Quote from: CrazyScientist on 28/06/2021 22:17:44Quote from: Bored chemist on 28/06/2021 22:07:34Because of the uncertainty principle.Cavity isn't made of photons - it's a fully defined physical object. You make a cavity at a specific size and you keep having it at this specific sizeAre you really stupid, or just acting?Do you realise that the "physical object" is made of atoms, that those atoms are particles and that the position of particles is uncertain because of the uncertainty principle?You have so much to learn; you could start with a bit of humility.
Can I then measure anything?
Seriously; stop posting, you are just wasting time and embarrassing yourself.Go off to the Kahn academy or something and learn some science.
Uncertainty principle doesn't make you unable of a very precise measurement.
Quote from: CrazyScientist on 28/06/2021 22:31:51that you can't overlap two EM fields at the same bandwidths in one volume of spaceFFS!Yes you can.You can shine two beams of light through each other.You can send two radio signals "through" eachother.They can overlap; and they do, notably on my bedside table where there are two radios.Seriously; stop posting, you are just wasting time and embarrassing yourself.Go off to the Kahn academy or something and learn some science.
You can send two radio signals "through" eachother.
Quote from: CrazyScientist on 28/06/2021 22:44:04Uncertainty principle doesn't make you unable of a very precise measurement.It doesn't need to in this case; it only needs to prevent you making a perfect measurement.Strictly, what it does is tell you that a perfect measurement is meaningless.It's not an issue of measuring things.The diameter of the sphere does not exist to a greater precision than that permitted by the uncertainty principle.From one side of the sphere's point of view, if the sphere behaved in the Newtonian way you seem to want it to (rather than the hundred year old QM way) the other side would be fixed in place- so its positional uncertainty would be zero, an it also would not be moving (the speed would be zero) - so the product of the uncertainties of the momentum and the position would be zero.That's not allowed.Considering how much time and space you have wasted telling me to look at new physics, you have a remarkably poor understanding of the stuff from a century ago.
I just have no idea
crossed beams won't result in the amplification of light
you can't overlap two EM fields at the same bandwidths in one volume of space
If you take 2 one-directional sources of white light at slightly different intensities and make them shine at us, so that both beams will intersect eachother on the way, amplitudes of both beams won't add up and won't result in the increase of light intensity in the intersecting area - instead white light emitted by the stronger source will be just as bright as before, while the white light at lower intensity will appear dark or even black if the differency of intensities gets high enough...
Just keep reading this"so photons, which are slowing down the mirror are giving up their own energy"until you realise it is nonsense.
Quote from: CrazyScientist on 28/06/2021 23:45:49 I just have no ideaYou are saying that only the wavelengths that "fit" in the cavity are allowed.They "fit" if the cavity diameter is an exact multiple of the wavelength.But nether the wavelength nor the diameter is "exact" in the first place,so your criterion makes no sense.
Quote from: CrazyScientist on 28/06/2021 23:14:06crossed beams won't result in the amplification of lightNobody said it would.
But what you said was that they could not be there.Quote from: CrazyScientist on 28/06/2021 22:31:51you can't overlap two EM fields at the same bandwidths in one volume of space and, in reality you can.So you are still wrong, and getting wronger.
Quote from: CrazyScientist on 28/06/2021 23:14:06If you take 2 one-directional sources of white light at slightly different intensities and make them shine at us, so that both beams will intersect eachother on the way, amplitudes of both beams won't add up and won't result in the increase of light intensity in the intersecting area - instead white light emitted by the stronger source will be just as bright as before, while the white light at lower intensity will appear dark or even black if the differency of intensities gets high enough...This seems to be a pipe dream.It's possible that there's a point in there somewhere, but it is buried so deep in rubbish that it's impossible to tell.
Quote from: Bored chemist on 28/06/2021 21:57:19Just keep reading this"so photons, which are slowing down the mirror are giving up their own energy"until you realise it is nonsense.