Paul Colby's latest activity
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Paul Colby replied to the thread Undergrad Are classical optics and quantum mechanics double slit experiments fundamentally the same?.Except, this sounds to me like you're infering one event, photon emition, from the photon detection. That's not how thermal sources... -
Paul Colby reacted to renormalize's post in the thread Undergrad How does a cloud chamber respond to 2-slit interference? with
Like.
The Motivation Spurred by some interesting back and forth with @PeterDonis in a recent forum thread, I present here my attempt to answer... -
Paul Colby reacted to weirdoguy's post in the thread Undergrad Are classical optics and quantum mechanics double slit experiments fundamentally the same? with Like.
For massless fields with spin 1 or more, we can't construct position operator, so one can't think about photons traveling along any path...
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Paul Colby replied to the thread Undergrad Are classical optics and quantum mechanics double slit experiments fundamentally the same?.More specific? I was discussing just the quoted statement I quoted in post #15. Hard to get more specific. What is really called for is...
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Paul Colby replied to the thread Undergrad Are classical optics and quantum mechanics double slit experiments fundamentally the same?.Actually, I would say your statement is filled with notions that are incorrect. A double slit interference pattern happens independent...
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Paul Colby replied to the thread Undergrad Are classical optics and quantum mechanics double slit experiments fundamentally the same?.My training is in experiment side of physics. If I turn on this "forced physical" interaction, I would have to get up from my stool and...
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Paul Colby replied to the thread Undergrad Are classical optics and quantum mechanics double slit experiments fundamentally the same?.A double slit interference pattern can be produced using sound or water waves. So interference is a wave phenomena in each of these...
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Paul Colby replied to the thread Undergrad Mass-and-spring model of parametric amplification.The issue I have with this is the equation of motion, ##m\frac{d^2x}{dt^2} + k(t)^2x = 0##, Is quite different than this one...
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Paul Colby replied to the thread Undergrad Mass-and-spring model of parametric amplification.The notion that just a nonlinear component, like a non-linear spring, leads to parametric amplification left me wondering. This wiki...
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Paul Colby reacted to tech99's post in the thread Undergrad Mass-and-spring model of parametric amplification with Like.
If the signal and pump are both applied to the mass, then the deflections will add. But to produce parametric action the spring...
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Paul Colby replied to the thread Undergrad Mass-and-spring model of parametric amplification.For parametric amplification, doesn’t one need to change a parameter? In your case it would be changing the spring constant with time...
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Paul Colby replied to the thread Graduate Zeros of functions analytic in 2 variables.Cool. For an analytic function, ##f##, in two complex variables one may solve ##f(z_1,z_2)=0## for ##z_2## as a function of ##z_1##...
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Paul Colby reacted to mathwonk's post in the thread Graduate Zeros of functions analytic in 2 variables with Like.
I don't know if the argument for my statement is of interest, but it is nice and fairly short; namely, Riemann showed for analytic...