PeroK's latest activity
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https://arstechnica.com/information-technology/2025/04/annoyed-chatgpt-users-complain-about-bots-relentlessly-positive-tone/ "I demand... -
PeroK replied to the thread Finding the nth roots of a complex number.1.41 is an approximation for ##\sqrt 2##
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PeroK reacted to renormalize's post in the thread Finding the nth roots of a complex number with
Like.
Here's what Mathematica gives for the roots of the equation ##z^3=-2+2\,i##, expressed in both rectangular and polar form. You can use... -
It is interesting to answer the same question assuming that the rod AB can rotate freely about the vertical axis
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PeroK reacted to Dale's post in the thread A Is the constancy of c a postulate or a derivable theorem? with Like.
An alternative approach is to just write the most general affine transformation between inertial frames and determine the coefficients...
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PeroK replied to the thread I Eddington’s margin of error.Probably. But, it gave the newspapers a great headline!
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Unfortunately, in Eddington's day it was not common to report experimental errors. So you may need to look at more modern experiments...
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PeroK reacted to PeterDonis's post in the thread A Physical properties of the vacuum in GR vs. QFT with Like.
I don't think there is a "canonical" process by which the community does this. Every physicist has their own opinion about it. Consider...
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PeroK reacted to ersmith's post in the thread I Understanding the historical shift away from absolute simultaneity with Like.
It should perhaps be noted that while LET can reproduce all of the predictions of SR, it does not naturally extend to a theory of...
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PeroK reacted to PeterDonis's post in the thread I Understanding the historical shift away from absolute simultaneity with
Informative.
There is no such thing. LET, as I've said, is SR, plus the claim that there's an unobservable absolute reference frame. It has to use... -
PeroK reacted to Herman Trivilino's post in the thread I Understanding the historical shift away from absolute simultaneity with Like.
Every theory has limits of validity. So it's always possible that a theory can be replaced with another that has less restrictive...
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PeroK replied to the thread Self Learning Math/Physics.Perhaps you need to start with a course in existentialist philosophy. Life is absurd and pointless and we have to find something to do...
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PeroK reacted to PeterDonis's post in the thread A Physical properties of the vacuum in GR vs. QFT with Informative.
There's another line of research that might be relevant to what the OP was asking about. There was a line of research in, IIRC, the...
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PeroK reacted to PeterDonis's post in the thread A Physical properties of the vacuum in GR vs. QFT with Informative.
Currently we don't have a good reconciliation of this. The best that we have is QFT in curved spacetime, but that's still not a complete...
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PeroK reacted to renormalize's post in the thread A Physical properties of the vacuum in GR vs. QFT with Informative.
Yes, gravitational fields in vacuum or a medium can be viewed as inducing effective dielectric properties therein. Here's the abstract...