Nugatory's latest activity
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Nugatory replied to the thread B Simple mass/scale puzzle.You can try a free body diagram that includes as separate components the hook on the scale and the case of the scale. The hook is... -
Nugatory replied to the thread I Shape of wave function (probability distribution) of a single photon.You could, and then you would indeed get a wave function as an answer. If the process creating the electron allows the electron to be...
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Nugatory reacted to div_grad's post in the thread I Phase and group velocity for the wave function with
Like.
@hokhani Note that this issue of group velocity of a wave packet can be equally well formulated in, e.g., classical electromagnetism... -
Nugatory replied to the thread B Conflict between the conservation of matter and the rapid expansion of our universe.A digression that was unhelpful to the thread and served only to make unnecessary work for the forum moderators has been removed. All...
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Nugatory replied to the thread I Question about a Square Light Clock.Speed relative to what? Imagine two of these light clocks, identically constructed and moving relative to one another. Both will find...
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I am also a retired college math teacher (over 40 years teaching). So I am on the side of Mark44 in this matter. I do not disagree...
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Nugatory replied to the thread B Flatlander analogy of spherical surface as observable universe.You are basically right about what is meant by "observable universe", and also that the word "observable" is often left out. But I am...
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Nugatory replied to the thread B How does the Riemann Hypothesis/Riemann Zeta function even work?.But do you want an answer that makes sense at the graduate level, or that makes sense to a high schooler with the math background that...
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Nugatory replied to the thread Trying not to ruin what I edit.The only way I ever edit.
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You can always switch to the BBCODE editor for any fine tuning. Thats what I do, especially when nesting quotes.
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Fe isn't exactly a moderator, but it does have a relatively high 'fast neutron removal' cross section, and some reactor designs, e.g...
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Nugatory reacted to Demystifier's post in the thread A Challenge to Bohmian mechanics by Sharoglazova et al, Nature, 2025 with Like.
Yesterday I have submitted a "Comment" (in Nature it is called Matters Arising) to Nature related to this paper. Today I have also...
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Nugatory replied to the thread I Intuitive look at bending of light by gravity.I will repeat the advice I gave you in an earlier post: Photons aren't what you think they are.
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Nugatory replied to the thread I Intuitive look at bending of light by gravity.The formula that you want is ##E^2=(pc)^2+(mc^2)^2## which works for all particles whether ##m=0## or not. A photon has both particle...
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Nugatory replied to the thread B Feynman QED Questions.It's not an explanation, it's an analogy. For Feynman's explanation, you'll want something like this. As an analogy it is useful: it...