FactChecker's latest activity
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FactChecker replied to the thread Learning physics beyond classical mechanics without labs?.Good point. But if Feynman didn't "understand" it, few people can. IMHO, the different interpretations of quantum theory are bewildering. -
FactChecker reacted to weirdoguy's post in the thread Learning physics beyond classical mechanics without labs? with
Like.
Keep also in mind that's only Feynmans opinion, and it highly depends on what one means by "understand" and some other philosophical... -
FactChecker replied to the thread Learning physics beyond classical mechanics without labs?.You can probably get as much from YouTube videos of the experiments. As far as understanding quantum mechanics, keep this quote in...
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FactChecker reacted to phyzguy's post in the thread B Feasibility of Sending a Radio Signal Detectable from a Neighboring Star with Like.
Also, how large is the receiver?
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FactChecker replied to the thread B Feasibility of Sending a Radio Signal Detectable from a Neighboring Star.Is the broadcast and/or reception directional and targeted to/from the Earth?
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FactChecker replied to the thread Probabilities on a spinner.I think "less than 50%" would be the general interpretation of "less than even".
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FactChecker reacted to sophiecentaur's post in the thread I Gravitational lensing of gravitational waves - real? with Like.
You can't expect the sort of image resolution that you get with optical wavelengths. Optical telescopes can image lensing rings of the...
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FactChecker replied to the thread I Gravitational lensing of gravitational waves - real?.Since gravitational lensing is a result of the intermediate mass determining what the geodesic paths are (straight lines, shortest...
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FactChecker replied to the thread I Find f(z) given f(x, y) = u(x, y) + iv(x,y).is analytic. Don't leave that part out. It is critical. Two analytic functions that are equal on the real line must be identical. So...
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FactChecker reacted to PeroK's post in the thread I Find f(z) given f(x, y) = u(x, y) + iv(x,y) with Like.
These are analytic functions. That explains it.
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Objects "experiencing gravity", whether in freefall or not, is not part of the theory of general relativity; it's a misunderstanding...
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FactChecker reacted to Frabjous's post in the thread Engineering Find the distance given a function for v(t) with Like.
You ignored the 2 in the 2t term. You can get times from the velocity equation using the given velocities.
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FactChecker replied to the thread Engineering Find the distance given a function for v(t).That's good so far. Your problem says that the speed goes from 7 to 99, but your equation for ##s## is in terms of time, ##t##. So what...
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FactChecker reacted to PeterDonis's post in the thread I Wigner's friend and quantum tunneling with
Haha.
Call me when they run a double slit experiment with the Earth as the "particle". -
FactChecker replied to the thread I Wigner's friend and quantum tunneling.That's a lot of qubits. But there are an estimated ##10^{50}## atoms in the Earth, so with luck it could happen. ;-)
