PeroK's latest activity
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PeroK reacted to ojitojuntos's post in the thread I Question about discussions around quantum interpretations with
Like.
I understand that the world of interpretations of quantum mechanics is very complex, as experimental data hasn't completely falsified... -
PeroK replied to the thread A How does time derivative commute from one variable to another?.That's the hand-waving way to do it. If you want to justify it more formally, then you need a sound mathematical basis for what is a...
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PeroK replied to the thread A How does time derivative commute from one variable to another?.The definition of a differential that I use is: If ##x = f(t)## then ##dx = f'(t)dt##, where ##f'(t) = \frac{df}{dt}##. So, as ##\dot...
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PeroK replied to the thread I Quantum behaviour of an electron around a positively charged sphere.I'm not sure what you mean by really occurs. The hydrogen atom satisfies the relevant Schrodinger equation. That gives a sequence of...
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PeroK replied to the thread I Quantum behaviour of an electron around a positively charged sphere.No, it doesn't. QM applies for a hydrogen atom. And classical electromagnetism does not apply.
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Wrong. For someone falling into the black hole, time passes normally. Their clocks read one second per second, just as ours do. We see...
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That is only a small part of the trick, not even close to the whole trick. Other parts of the trick include 1) we can use any...
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PeroK reacted to weirdoguy's post in the thread I Quantum behaviour of an electron around a positively charged sphere with Like.
Why? Positively charged sphere is something way different than proton. Real world sphere would consist of milions of atoms itself!
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PeroK replied to the thread I Quantum behaviour of an electron around a positively charged sphere.How are you going to model a charged sphere in QM? If you replace the hydrogen nucleus with a greater positive charge, then the lowest...
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No. As I said, intuitive reasoning in curved spacetime is a mistake. Your objection turns out to be similar to claiming that you can't...
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PeroK replied to the thread B How can a black hole absorb matter?.This is a serious misconception, albeit one promoted by many popular-science sources.
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PeroK reacted to Line_112's post in the thread B How can a black hole absorb matter? with
Skeptical.
But the whole trick here is that we are the external observers, not the little people falling into the black hole. For us, time does not... -
PeroK replied to the thread B Newton's first law?.By today's standards your grandad would have been progressive in not believing that the balloon was a government conspiracy to poison...
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PeroK replied to the thread It is an honor to be here with you.It all sounds interesting, but be aware that this site is dedicated to mainstream science as an academic subject.
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PeroK reacted to JimWhoKnew's post in the thread I Visual depiction of atomic orbitals with
Informative.
Divide your result corresponding to ##p_y## by ##i## (a global phase factor) and observe that now both expressions are real (and...