PeroK's latest activity
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PeroK replied to the thread B Imaginary Pythagoras.I recommend correcting the thread title! I assumed someone would have done it by now. -
PeroK replied to the thread B Effect of mass on the acceleration of an elastic pendulum?.Is this what you are looking for? https://en.m.wikipedia.org/wiki/Elastic_pendulum
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PeroK replied to the thread B Onto set mapping is the surjective set mapping, and into injective?.I looked it up. The AC is not needed.
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PeroK replied to the thread B Onto set mapping is the surjective set mapping, and into injective?.For example, ##X = Y = \mathbb R## and ##f = g## are both the exponential function. Then how to construct ##F##?
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PeroK reacted to Ibix's post in the thread I Why measure the speed of light in one direction? with
Like.
You can construct Maxwell's equations in non-orthogonal coordinates if you like. Then you'll get a non-isotropic speed. As always, this... -
This made me laugh: Linux has been using SSH for decades with that same principle, securing practically all the servers of the...
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PeroK replied to the thread B Imaginary Pythagoras.That's one representation of Minkowski geometry, where the vertical axis is time and the horizontal axis is spatial. The spacetime...
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PeroK replied to the thread B Average velocity as a weighted mean.The proportional of the total time that ##v_1## applies is ##\frac{v_2}{v_1+v_2}##. This is a relative weighing of ##v_2##. And vice versa.
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PeroK reacted to Chestermiller's post in the thread I Entropy and configurations of microstates with Like.
In statistical thermodynamics, the following approximation is frequently used: $$\ln{(n!)}=\ln(1)+\ln(2)...\ln(n-1)+\ln(n)\approx...
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PeroK reacted to anuttarasammyak's post in the thread B Average velocity as a weighted mean with Like.
$$\bar{v}=\frac{2L}{L/v_1+L/v_2}=\frac{2v_1v_2}{v_1+v_2}$$ I am not sure what are harmonic mean and weighted average you say in this result.
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PeroK reacted to Demystifier's post in the thread I Entropy and configurations of microstates with Like.
Here it is tacitly assumed that ##x\gg n##. Under this approximation $$x(x-1)(x-2)....(x-(n-1)) \approx x^n$$
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PeroK reacted to jedishrfu's post in the thread B A Time Crystal Visible to the Human Eye with
Informative.
https://interestingengineering.com/science/worlds-first-time-crystal-visible-human-eye -
PeroK reacted to Nugatory's post in the thread I Quantum Entanglement and Synchronization with Like.
No. There is no way of distinguishing a so-called collapsed state from an uncollapsed state (the “so-called” is there because even...
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PeroK replied to the thread I Quantum Entanglement and Synchronization.I guess your idea is to measure A and simultaneously B "changes state", which is instantly observed by clock B. That misunderstands...
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PeroK replied to the thread I Quantum Entanglement and Synchronization.The mechanism described there is not what you propose in your original post.