PeterDonis's latest activity
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PeterDonis reacted to weirdoguy's post in the thread Undergrad Are classical optics and quantum mechanics double slit experiments fundamentally the same? with
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It has been discarded from modern quantum physics a long time ago (even though pop-science still talks about it). It has been discussed... -
PeterDonis replied to the thread Undergrad Are classical optics and quantum mechanics double slit experiments fundamentally the same?.If by "photon" you mean specifically one photon detection--one mark on a detector screen--then yes. But... It's something else: it's...
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PeterDonis replied to the thread Undergrad How does a cloud chamber respond to 2-slit interference?.An interesting variant of this experiment to consider: what if there is no vacuum region behind the slits? That is, the cloud chamber...
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PeterDonis replied to the thread Undergrad Are classical optics and quantum mechanics double slit experiments fundamentally the same?.Moderator's note: Thread moved to the QM interpretations and foundations subforum.
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PeterDonis reacted to Matterwave's post in the thread Undergrad Particle vs Wave Interpretations of QM with Like.
Differential equations require initial value conditions or boundary value conditions to be uniquely specified.
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PeterDonis replied to the thread Undergrad How to understand the basis transformation of the Rosen metric?.It's equation (35) in the paper that was referenced in post #8 in the thread. The null coordinates used in the paper seem to me to be...
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PeterDonis replied to the thread Undergrad Particle vs Wave Interpretations of QM.Yes, if you already know the field globally, that determines what sources are necessary to produce that field. But of course that's true...
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PeterDonis replied to the thread Undergrad How to understand the basis transformation of the Rosen metric?.Hm. When I plug the metric into Maxima, I do get a Riemann tensor with no components purely in the ##x## - ##y## submanifold. However, I...
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PeterDonis reacted to Matterwave's post in the thread Undergrad How does reciprocal time dilation work? with Like.
This statement suggest you still do not grasp the relativity of simultaneity. Consider for space like separated events ##A,B##, I can...
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PeterDonis reacted to Dale's post in the thread Undergrad How does reciprocal time dilation work? with Like.
Have you completed the figure I described above? Please post it...
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PeterDonis replied to the thread Undergrad How does reciprocal time dilation work?.Proper time recorded by some particular observer's clock at some particular event is independent of any choice of reference frame. But...
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PeterDonis replied to the thread Undergrad How to understand the basis transformation of the Rosen metric?.It's the angle, which changes along the wave, between the ##x## - ##y## basis and the principal axis of polarization of the wave. I'm...
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PeterDonis replied to the thread Undergrad Particle vs Wave Interpretations of QM."Only one" in what sense? It's an antisymmetric tensor field with six independent components, as @Matterwave said in post #251. Also...
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PeterDonis replied to the thread Undergrad How to understand the basis transformation of the Rosen metric?.I don't think so. I think your mistake was trying to give ##\alpha## the wrong physical meaning. As I noted in post #11, ##\alpha## is...
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PeterDonis replied to the thread Undergrad Particle vs Wave Interpretations of QM.No, charge distributions and EM waves are already described within Maxwell's theory of the electromagnetic field and its sources. I...