PeroK's latest activity
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https://www.newsweek.com/robert-redford-dead-hollywood-live-updates-2130559 Apparently Redford was a somewhat poor student, so was... -
PeroK reacted to Ibix's post in the thread I What Are the Limits of the Universe According to Cosmologists? with
Like.
It might turn out to have a non-zero curvature. But if it truly has a zero curvature we will never be able to confirm that it is not... -
PeroK replied to the thread I Energy*time uncertainty for particle decay.A lot of what passes for QM in non-specialist courses is a messy hybrid of QM and classical thinking, IMHO. If I could explain why...
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PeroK replied to the thread I Energy*time uncertainty for particle decay.I found a video of an Indian physics professor exploding this myth for his students. He knew they would all have learned the "old"...
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PeroK reacted to Herman Trivilino's post in the thread I Energy*time uncertainty for particle decay with Like.
The position-momentum uncertainty principle is alive and well. I don't know the history, but certainly one still sees the erroneous...
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PeroK reacted to PeterDonis's post in the thread I Energy*time uncertainty for particle decay with Like.
I note you say (classical). Those textbooks are not focused on QM; they might cover it, but they're not primarily QM textbooks. Which...
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PeroK replied to the thread I What Are the Limits of the Universe According to Cosmologists?.The NG article is not worth reading. According to Introduction to Modern Cosmology by Liddle: The Big Bang model is reliable back to...
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PeroK replied to the thread I Energy*time uncertainty for particle decay.PS my Internet is down. I think I posted a quotation from Griffiths on this recently if you can find it.
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In addition to #2: Elementary particles don't spin. Many of them have non-classical degrees of freedom which are named "spin", because...
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All elementary particles have an intrinsic spin/angular momentum. The fact that particles spin at all is due to Special Relativity...
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First-year maths undergraduate. I’m interested in real analysis, algebra, calculus and most areas of abstract mathematics. Not a big fan...
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PeroK replied to the thread I Energy*time uncertainty for particle decay.Introduction to QM by Griffiths explodes that myth. There are a lot of sloppy textbooks it appears.
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PeroK replied to the thread What Determines the Minimum Mass of Block B for Movement on an Inclined Plane?.PS if we are being totally precise, doing the mathematical calculation, we will find the maximum mass of A that will not move block B...
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PeroK replied to the thread What Determines the Minimum Mass of Block B for Movement on an Inclined Plane?.Let's fix the mass of block B (##M##). Start with a small mass of block A ##m##. This moves up and down. The maximum force in the...
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PeroK reacted to ojitojuntos's post in the thread Help me understand why “Block Universe” is not scientifically proven with Like.
You are correct. While my questions were mostly philosophical, it was very enriching for me to read you and others who engaged with me...
