Two weeks short of being 7 years old, this video is still among the best on TH-cam to explain the horrific "Addition of Angular Momenta" paragraph in Griffiths. Brilliant.
Finally!, as a mathematician that is trying it's way into physics I can finally use my knowledge on freaking representation theory from my tesis hahah sorry it is just that it was really hard for me to understand those topics when I was developing my tesis but now I can use it, actually I stopped the video several times bc I was connecting the dots already and when he said exactly what I was thinking I was so happy. Haha well have fun in life and wish me luck on my master in physics bc I am going to need it :3
Brant Carlson you da MVP, I wouldn't understand any of this without watching and rewatching your videos. Thanks for sticking through with completing this lecture set!
What if the two particle interact with each other and the coupling constant is a non zero quantity (J). How will the J be incorporated in the addition of angular momentum?
What is the reason to use the lowering operator here? As far as I can tell, it does not provide any further information, since we already know the S_z Momenta. We also know the possible spin combinations. I'm confused....
with CG coefficients i don't understand because my teachers writes when s1=1 and s2=1/2 ...... |3/2 -1/2> = sqrt (2/3) |1 0> |1/2 -1/2> + sqrt(1/3) |1 -1> |1/2 1/2>
Two weeks short of being 7 years old, this video is still among the best on TH-cam to explain the horrific "Addition of Angular Momenta" paragraph in Griffiths. Brilliant.
It's 11 years old now
Thank you for explaining this in a way that finally makes sense. One of the best videos ever.
Adding angular momentum is one of the most difficult things I have come across in physics so far. I hate how hard it is.
@eh6794 I think I got a 2:1 in it which would be in the 60-70% range. In the UK that's considered good. Good luck with your finals!
Brant, thank you for saving my semester!
Finally!, as a mathematician that is trying it's way into physics I can finally use my knowledge on freaking representation theory from my tesis hahah sorry it is just that it was really hard for me to understand those topics when I was developing my tesis but now I can use it, actually I stopped the video several times bc I was connecting the dots already and when he said exactly what I was thinking I was so happy. Haha well have fun in life and wish me luck on my master in physics bc I am going to need it :3
Brant Carlson you da MVP, I wouldn't understand any of this without watching and rewatching your videos. Thanks for sticking through with completing this lecture set!
Thanks to you, I've spared 2 hours trying to study it from the books, alone. Your explanation is very clear ! Merci !
This is the greatest video on this topic I have ever seen
you're a good guy, Brant, I appreciate it a lot.
Bro how did u explain this so well, still unsure about some things but i think i understand a lot more than before the video
Class has started to go over this, This helps so much! Thank you !
At 4:35 where is the factor of h-bar?
Very often angular momenta are given in units of h-bar -- otherwise h's would be abound.
What if the two particle interact with each other and the coupling constant is a non zero quantity (J). How will the J be incorporated in the addition of angular momentum?
thank you very much you just helped me a lot !
What is the reason to use the lowering operator here? As far as I can tell, it does not provide any further information, since we already know the S_z Momenta. We also know the possible spin combinations. I'm confused....
with CG coefficients i don't understand because my teachers writes when s1=1 and s2=1/2 ...... |3/2 -1/2> = sqrt (2/3) |1 0> |1/2 -1/2> + sqrt(1/3) |1 -1> |1/2 1/2>
... and they are bloody complicated, I got scared after hearing this, and when I understood, I got that complicated is an understatement :(
Perfekt. Danke !
Can you explain me how you got the state at 7:30 ?
th-cam.com/video/xeYysQWLXqE/w-d-xo.html - Check this video to understand how the fourth state is derived from orthogonality argument.
Thank you very much indeed.
Thank you this really helped!
Better than Griffiths
Thank you! now i think i understand it!
briliant
Thank you
You are the best :)
omg, very helpful :3
Thanks
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