PeterDonis's latest activity
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PeterDonis reacted to James_Sheils's post in the thread Graduate A night with the stars (Brian Cox on telly) with
Like.
Hello, I am the author of the review "Double Twit Experiment – What Brian Cox Gets Wrong", as linked by others. I came across this... -
PeterDonis reacted to Matterwave's post in the thread Graduate Position vs momentum measurement with Like.
If you are asking from a purely theoretical view, you should be able to make your question much more precise. For example, what state...
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PeterDonis reacted to Matterwave's post in the thread Undergrad Particle vs Wave Interpretations of QM with Like.
I don't view it that way. Energy as a concept is quite well defined and precise within each physical theory. Indeed that definition...
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PeterDonis reacted to Morbert's post in the thread Undergrad Particle vs Wave Interpretations of QM with Like.
Disabusing people of notions like everything is made of energy is well within the wheelhouse of physicists.
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PeterDonis replied to the thread Undergrad Are classical optics and quantum mechanics double slit experiments fundamentally the same?.What does this even mean? It looks like personal speculation, which is off limits here. Please don't clutter the thread.
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PeterDonis replied to the thread Undergrad Are classical optics and quantum mechanics double slit experiments fundamentally the same?.So far, it doesn't appear that anyone in this thread but you understands whatever issue you think you're asking about. If you can't...
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PeterDonis replied to the thread Undergrad Are classical optics and quantum mechanics double slit experiments fundamentally the same?.Except when it doesn't, as I pointed out in my post #22, which you did not quote.
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PeterDonis replied to the thread Undergrad Are classical optics and quantum mechanics double slit experiments fundamentally the same?.There is no observation that tells you that light traveling in free space is made of photons. So I don't know what you're referring to...
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PeterDonis replied to the thread Undergrad Particle vs Wave Interpretations of QM.No, an excitation in a quantum field has energy. Sure, energy and mass are equivalent. That doesn't mean a quantum field excitation...
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PeterDonis replied to the thread Undergrad Comparing the time of two moving clocks.No, this is not correct as a description of what each observer actually sees--the timing of the light signals they receive. If the two...
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PeterDonis replied to the thread Undergrad Comparing the time of two moving clocks.Where is this quote taken from? Please give a reference.
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PeterDonis reacted to Matterwave's post in the thread Undergrad Particle vs Wave Interpretations of QM with Like.
What do you mean by "highest level"? QFT and GR both form our fundamental understanding of physics. Creation operators are a...
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PeterDonis replied to the thread Undergrad Particle vs Wave Interpretations of QM.A creation operator does not represent an actual physical process. (It's not even an observable since it has no eigenstates.) It's a...
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PeterDonis replied to the thread Graduate Position vs momentum measurement.I'm not sure he meant spacetime positions, just spatial positions--i.e., I think he's implicitly assuming non-relativistic QM.
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PeterDonis replied to the thread Undergrad Comparing the time of two moving clocks.I don't think this is true. You're asking the same question here that you asked in your previous threads (of which there have been more...