PeroK's latest activity

In mm/dd/yy format, 9/16/25 is 32/42/52. In dd/mm/yy, it's 42/32/52, still Pythagorean, but not monotonically sequential.

That was one of the great Oscar travesties. Ordinary People over The Elephant Man and Raging Bull?! Best director and best picture?!

I'm back in London, so I'll read your paper today. I'm not convinced that a coin is a good analogy for a quantum system, like a spin...

I would love to see that if you can dig it up.

https://www.newsweek.com/robert-redford-dead-hollywood-live-updates-2130559 Apparently Redford was a somewhat poor student, so was...

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...

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...

I found a video of an Indian physics professor exploding this myth for his students. He knew they would all have learned the "old"...

The position-momentum uncertainty principle is alive and well. I don't know the history, but certainly one still sees the erroneous...

I note you say (classical). Those textbooks are not focused on QM; they might cover it, but they're not primarily QM textbooks. Which...

The NG article is not worth reading. According to Introduction to Modern Cosmology by Liddle: The Big Bang model is reliable back to...

PS my Internet is down. I think I posted a quotation from Griffiths on this recently if you can find it.

In addition to #2: Elementary particles don't spin. Many of them have non-classical degrees of freedom which are named "spin", because...

All elementary particles have an intrinsic spin/angular momentum. The fact that particles spin at all is due to Special Relativity...

First-year maths undergraduate. I’m interested in real analysis, algebra, calculus and most areas of abstract mathematics. Not a big fan...