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You've been a big help! Thanks!

For Introduction to Electrodynamics do I need to understand all of vector calculus already?

Bro disappeared

Thank you explained tensors in a way that wasnt stupid like trying to use twnsors to define cube or problems that arent optimized to be solved with tensors like idk spitting aphere into a mercarder projections because honestly tensors are for turning well sefined easy to understand boundary conditions such as idk spacetime, heat flow, etc. Where there are clear dead stops and complete reflections and so many hardstops that are suited to be solved with continuous functions.

easiest game ever when youre doing your phd

Very good, although difficult to follow. 50 years ago I got a D in electrodynamics, partly because I had no idea how to use Green's function. Hopefully, I'll understand it one day.

This is easier, do the first test, if you use numbers you are an engineer, if you don't use them you may be a physicist or mathematician. Then he asks how to solve int [(dx / dt) dt], if the person simplifies differentials he is a physicist, if he solves the integral in a boring way, then he is a mathematician

Is Graduation the first time you enter in the University or is it after the Undergraduation Because in India we use Bachelor and Master for undergraduate and graduate degree. So In Indian context is it your masters or bachelors?

Now you know when G is always negative except for when it isn't 🤣.

petition for andrew to heart all 254 comments here Edit: I know the comments will increase and i may not be able to always keep up with it

Wats topic is this

the "this is my seat now" part 😂 so accurate

My black holes lecturer trashes the other for being a “mostly minus” guy

Holly crappp , wtf bro thats just amazing , tbh i didnt expact that geodesic equation coming outta those messy calculations (I recalculated it again myself tho] ) it was impressive fr . Before ur video i could derive it by using only Least action principle ... Thanks a lot tho ))))))))))

what a nice video to watch

This was a really good video for A level Physics in the UK 🇬🇧.

The earth is flat like a round disk or clock and it is immovable.

1:00 BPRP is featured in the vdo (on the board)

Why isn't G(x, y) defined at x=y? is it because of the delta? like if u were to define G at x=y then the second derivative with respect to x, it blows to infinity

Sup man im back for 6ths!

I don't know why but it all makes sense, 😆

Ok, smartass

These all are quite lame and boring. It's reddit afterall.

An engineer: assume pi = 3 and put a safety factor of 10

it is one to one, but it is not onto

Where is Lev Landau

This is the problem with armchair philosophers who claim that nothing is provable, they'd rather have infinite regress be the only outcome instead of taking certain things as axiomatic and establishing logical underpinnings. I'm with the late Dr. Hawking's thesis on philosophy, and Alder's razor is my personal favorite of the philosophical razors. Philosophers, please, it's really not "turtles all the way down" lol, can y'all move on and stop navel-gazing? Thanks.

Just imagine how this guy would react if he found out about Obsidian.

Man you are married! Congratulations :)

Nice

This is pure gold

Imagine if it were equal to *7*

Me, a JEE student who has to memorise everything for each and every case in physics, because I don't have time to understand all the derivations

Awesome video. But why can't the electric and magnetic fields be represented as four-vectors instead of a tensor?

It is kinda danger to put Jackson and a knife on the same table.

1:12 bold of you to assume that the identity is trivial to my high school physics ass.

I miss the meme reviews

As a graduate student in materials engineering, I feel like the diagnosis from this video tells me I’m in the wrong program…

Thank you so much sir ❤ love from India 🇮🇳

Chad

theoretical physics is so cool

I have interesting story from my highschool. I had a good teacher of physics but he was quite burnt out. He had a lot of knowledge but wasn't motivated to get new when I asked him tricky questions. When I was in graduating year me and my classmates chose subjects we wanted to be tested from. However I was the only one that voted for physics and school couldn't afford to give me classes I needed. So I started to study by myself. It was pretty hard because when there were some easy concepts that I couldn't understand, I didn't have anyone to explain them. On the other hand it was big advantage because I could come up with something by myself and I learned how to think, be independent and with that it was easier to remember the topics

Thank you so much for your videos! Some questions to this one: 1. If you say A^\mu = (..,...) you're actually saying that a component equals a vector. Is this just sloppy physicist style or is A^\mu really the name of the whole vector? 2. Why do you write the indices of the E up? 3. Taking down the indices of the partial derivatives (while regarding the sign), does it just "work" or is it mathematically correct? Because applying a dual object to a "normal" object isn't the same as applying a "normal" object to another "normal" object. ("normal" = not dual)

Is this one not #justgirlythings?

Maybe i have in idea who’s she is

And I have every weird prefix for big numbers up to a novemtrigintillion (a googol is 10 duotrigintillion)

Even i know that the globe is more complex than the flat...and books tought me that world is round and Nasa and the movies...so i have to say the earth is...... a globe .

I am finishing up an MSc Physics course.. I took the QM exam, I think I failed it. I still don't get any/much of this.. :(

Yes Earth is flat .

First time I got biologist second time I got physicist?