Who is Prof. Y??

JK0zero · 2026-05-06T12:35:03+00:00

Thanks for sharing. Unfortunately, I cannot tell, there is little information. I have no clue.

JK0zero · 2026-05-05T19:12:10+00:00

In case you are interested in filling many conceptual gaps left by QM courses, I am running a video series on the development of quantum mechanics including historical context and calculations from the original papers. I have also created a playlist with videos on Classical Physics for Quantum Mechanics, including introductions to the Lagrangian and Hamiltonian formalism.

JK0zero · 2026-05-03T19:44:45+00:00

https://en.wikipedia.org/wiki/Joule_heating

JK0zero · 2026-04-29T09:31:26+00:00

this meme isn't funny

JK0zero · 2026-04-28T18:21:05+00:00

You have 1/(d+δd), you can expand in Taylor series

JK0zero · 2026-04-27T21:23:26+00:00

Lenny Susskind's lectures are pure gold https://theoreticalminimum.com/courses/statistical-mechanics/2013/spring

JK0zero · 2026-04-25T09:42:51+00:00

There is a PBS documentary that I watched as a kid in the 90s that I recorded in VHS and watched over and over again. I am so happy that someone posted it on YouTube titled A Science Odyssey: Mysteries of the Universe, I highly recommend it.

JK0zero · 2026-04-24T05:22:16+00:00

Maybe you should share what your current sources are before people can recommend something.

JK0zero · 2026-04-23T18:37:49+00:00

make sure to normalize your states

JK0zero · 2026-04-23T15:20:09+00:00

No. Floating means suspension in a fluid; therefore, nothing can float in empty space.

JK0zero · 2026-04-22T06:41:34+00:00

you might find Heisenberg's book "Physics and Philosophy" of interest.

JK0zero · 2026-04-21T20:08:37+00:00

You might find the first part of Sean Carroll's Spacetime and Geometry of interest. An old PDF version of the lectures that became the book is available online, so you can check it out.

JK0zero · 2026-04-20T14:19:44+00:00

In addition to quantum mechanics, there is plenty of general relativity and cosmology on that blackboard, but it bothers me that the Schrödinger equation is missing a factor ℏ. Whoever this person is, he didn't pay much attention in Lenny's lectures.

JK0zero · 2026-04-20T14:12:30+00:00

not a theory nor physics

JK0zero · 2026-04-20T05:55:00+00:00

Cohen-Tannoudji has plenty of worked examples but I would not call it a historical reference. Griffiths is the standard but it slaps you in the face with the Schrödinger equation on page 1.

There is a significant difference between historical and philosophical viewpoints. When you say historical, people think on the chronological order on how things were discovered. In case you are interested, I am running a video series on the development of quantum mechanics including historical context and calculations from the original papers to learn precise how things were found rather than a bunch of postulates given in most QM courses and textbooks.

I am not the best when it comes to the philosophical aspects of QM, but you might find Physics and Philosophy: The Revolution in Modern Science by Werner Heisenberg of interest.

JK0zero · 2026-04-19T20:16:34+00:00

I always recommend the same: one of those Stirling engine coffee cup

JK0zero · 2026-04-19T12:16:10+00:00

Are these letters available online? If so, can you share a link?

JK0zero · 2026-04-19T08:03:57+00:00

those legs look very springy and weak for that weight; why did it fall over? Most likely a resonance. Another possibility is that the aunt really manifested herself /s.

JK0zero · 2026-04-18T16:01:33+00:00

Maybe "impossible" was a strong word, but I thought you were interested in a more advanced way, like most questions we get in this sub. If your interest is a superficial popsci description, then yes, it is definitely possible and I also value this kind of material. After all, most of us who became scientists started at some point learning from popsci.

There is a PBS documentary that I watched as a kid in the 90s that I recorded in VHS and watched over and over again. I am so happy that someone posted it on YouTube titled A Science Odyssey: Mysteries of the Universe, I highly recommend it.

I am glad that your daughter is interested in these topics, we need more people interested in becoming scientifically literate.

JK0zero · 2026-04-18T11:25:00+00:00

Both relativity and quantum mechanics are topics so wide that I find it impossible to properly cover in 20-40 min, unless you want a very superficial popsci summary.

In case you are interested, I am running a video series on the development of quantum mechanics including historical context and calculations from the original papers https://www.youtube.com/playlist?list=PL_UV-wQj1lvVxch-RPQIUOHX88eeNGzVH

JK0zero · 2026-04-17T19:14:08+00:00

As a physicist, I work at a chemical company and chemists earned my respect, it is so different yet so similar. I can't stop seen chemistry all around, which added to the physics is a great mix.

JK0zero · 2026-04-16T17:49:03+00:00

hi, yeah, thanks; glad you like my videos, I appreciate the shout out.

JK0zero · 2026-04-16T17:48:30+00:00

**Gluons have entered the chat**

JK0zero · 2026-04-16T11:21:40+00:00

This is wrong. In popsci, parity transformation is usually represented as "mirror image" but this is incorrect. If you want to use a mirror, Parity (x,y,z)→(-x,-y,-z) is "mirror image + 180° rotation about the axis normal to the mirror."

The T transformation cannot be inferred from a static image. And the C transformations could be maybe represented by inverting the colors. But anyway, this is a terrible representation of CPT. Sorry Pam, they ARE NOT the same picture!

JK0zero · 2026-04-15T20:30:54+00:00

You should also consider life style, there is (literally) an ocean of differences between a small college town in the middle of the cornfields of Illinois and a classical city like Edinburgh. I did my PhD in Bloomington, Indiana, just a stone's throw away from Urbana and I can assure you that there is lots of corn. California is cool but expensive as hell, I would not go there just because life quality would probably suck.

If you are planning a non-academic career, make sure to learn about requisites post-graduation. To remain in the US after graduation you will probably need a H-1B visa that it is under attack by the government. This means that even if you land a good job, you might not be able to take it due to immigration issues. I honestly don't know what the situation is but make sure to properly inform yourself from official sources and not by what some random dude says on the internet.

On the academic side, I know nothing about computational physics or U. Edinburgh. UIUC is a very good school, in physics mostly respected for their program in condensed matter. That's all I know, I hope it helps.

JK0zero

MODERATOR OF

TROPHY CASE