PeroK's latest activity
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PeroK replied to the thread High School Mass & energy increments a la e = mc^2.The extra mass of the atom is precisely the extra potential and kinetic energy of the orbital. Note that this total mass of a hydrogen... -
PeroK reacted to fresh_42's post in the thread Undergrad Erroneously finding discrepancy in transpose rule with
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##\mathbb{C}\not\cong\mathbb{R}^2## The complex numbers are a field; the complex plane is not a field. If you want to identify them... -
PeroK reacted to Sagittarius A-Star's post in the thread Undergrad Is this another "paradox" or a veritasium mistake? with
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In theses notes is also mentioned, that Johann Georg von Soldner calculated the gravitational deflection of light as it passes the sun... -
PeroK replied to the thread Graduate RIP Daniel Kleppner (1932-2025).Classical Mechanics by Kleppner and Kolenkow was one of the first physics books I studied. It was very much my style of book. I spent... -
PeroK reacted to Dr. Courtney's post in the thread Graduate RIP Daniel Kleppner (1932-2025) with
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Dan was my PhD advisor. I learned a lot from him. He was a blessing to me. -
PeroK replied to the thread Undergrad Is this another "paradox" or a veritasium mistake?.The irony is that this thought experiment about light being deflected in a gravitational field doesn't lead to anything verifiable. In... -
PeroK reacted to pervect's post in the thread Undergrad Is this another "paradox" or a veritasium mistake? with
Skeptical.
Yes, I was in a bit of a rush - though I probably couldn't be that precise anymore anyways. (Was I ever? Probably not, not that it... -
PeroK replied to the thread Undergrad Is this another "paradox" or a veritasium mistake?.The video was posted 5 years ago and has already been described in the comments as a "masterpiece"! That said, it would be interesting... -
PeroK reacted to weirdoguy's post in the thread Why Are You Still Here? A Curious Question with
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I like seeing crackpots banned. Especially when stupidity is triumphing in real life. -
PeroK reacted to Dale's post in the thread Undergrad Is this another "paradox" or a veritasium mistake? with
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And making the animations appealing rather than accurate. The rocket doesn’t appear to be accelerating, or at least if it is... -
PeroK replied to the thread Undergrad Is this another "paradox" or a veritasium mistake?.I already read and replied to his response.