Oh woooow. This is the first Super Thanks that this channel is receiving. Thanks a lot @BobBhisitkul.. you will always be remembered since I took a screenshot haha.
wow, this is so clear and concise -- I understood in 15 minutes what has been confusing me for weeks. I hope some day you do videos on gauge invariance in field theory.
Man i love u, i tried to read Griffiths for my EM exam and it doesnt explain nothing, it just puts the tensor without steps to get it. Thanks from Spain
Thanks for video. I subscribed the channel. Well done! I believe you can write a cookbook for tensors or make an interesting online course "Tensors in nutshell". Really appreciate your hard work to explain the topic.
Hey buddy was struggling a lot with Electrodynamics course. You are literally saving my semester. Thanks a ton and keep up the good work. P.S: My friend says you saved his life as well
This was very helpful! Your videos are great!!. I'm sure you will get many more subscribers soon because videos on this topic are rare. And these are the fundamentals for Graduate level Astrophysics, so a lot of students need good videos like these. Best wishes!
I think you should put the tensor video in a playlist and in a proper order, this might help you a lot and ua too. Besides that.. great video and i see you have a lot of clarity in your concepts.
I've put quite an effort into making this video, but I'm not getting that many subscribers 😢 If this video helped you, pleaseeeee subscribe to my channel. It really motivates me ! :)
@@tokajileo5928 Hey. I'm sorry but I haven't studied that far :/ That's the most difficult question I've received, haha. I've studied up til the beginner's level of the string theory.
Here you "derive" the EM field tensor from the scalar and 3-vector potentials which together constitute a 4-vector potential. But why not first define the EM field tensor from the definitions of the E and B fields? dp/dt = qE + qv × B and dW/dt = qE⋅v ?
Cuz i thought this is what most people would want to know. If you already know how to explain that, you should make one about it! :) But I think that is a separate topic.
Hey i have a question, in my textbook by Griffiths it explains how to go from the usual Maxwell equations to the tensor form of the equations and then it shows how F^\mu u can be written in terms of the 4-vector potential, but can the dual tensor G^\mu u also be written in terms of 4-vector potentials? if so, why isnt this done in the book? is it because this would just give G^\mu u = 0? Thank you:)
Thats a great question, and you are right. For the dual tensor, its simply 0. It's not shown in the textbook , but neither does the field tensor. Griffith only shows how to use it, it never showed how they got the expression. And thats what i showed here. How to derive the electromagnetic tensor.
Thanks!
Oh woooow. This is the first Super Thanks that this channel is receiving. Thanks a lot @BobBhisitkul.. you will always be remembered since I took a screenshot haha.
I might as well also mention you in the next video haha. You made my day !
ua-cam.com/video/qUFWL-w_hEk/v-deo.html
You are mentioned (at the end of the video) !
wow, this is so clear and concise -- I understood in 15 minutes what has been confusing me for weeks. I hope some day you do videos on gauge invariance in field theory.
Man i love u, i tried to read Griffiths for my EM exam and it doesnt explain nothing, it just puts the tensor without steps to get it. Thanks from Spain
Explanation and Visuals are the best I have seen for ENM, we need more of these. Specifically explanations from griffiths intro to electrodynamics!
This videio is truly AWESOME! It was a straightforward derivation and took the mystery away. THANK YOU!!!
Not a problem :)
This is an excellent tutorial. Thank you. Surprised by the comparatively low number of "likes".
Thank you so much :)
One of the most wonderful videos on the topic!!
Thank you for the wonderful comment !
Thanks for video. I subscribed the channel. Well done! I believe you can write a cookbook for tensors or make an interesting online course "Tensors in nutshell". Really appreciate your hard work to explain the topic.
Thanks for the great comment ! and thanks for subscribing !
Sir, you are a very good
teacher.😊
Thank you !
Your method of explanation is wonderful...
This is really good. You should have many more subscribers. Please continue with your great work
:) I wish I had more subscribers indeed haha. But I believe the time will come. Thank you so much !
Hey buddy was struggling a lot with Electrodynamics course. You are literally saving my semester.
Thanks a ton and keep up the good work. P.S: My friend says you saved his life as well
Haha happy to hear :)
This was very helpful! Your videos are great!!. I'm sure you will get many more subscribers soon because videos on this topic are rare. And these are the fundamentals for Graduate level Astrophysics, so a lot of students need good videos like these. Best wishes!
Thank you so much :'( it cheered me up
I think you should put the tensor video in a playlist and in a proper order, this might help you a lot and ua too. Besides that.. great video and i see you have a lot of clarity in your concepts.
Thx for the suggestion. Im not sure what you mean on ordering, but ill see what i can do later
Thanks a lot sir!!!! Best and easiest way to do that!!!❤❤❤❤
Life Saver
Thank you so much, really.
Thank you soooooo much
Thank you very much!
Hi.. I was following daniel fleisch and matrix you have written here is for the covariant tensor not the contravariant
I see. Maybe we have different conventions? Was his video better ? :'(
@@ReumiChannel yes.. Good explaination✌thankyou
very good
I've put quite an effort into making this video, but I'm not getting that many subscribers 😢
If this video helped you, pleaseeeee subscribe to my channel. It really motivates me ! :)
can you explain to an average person like an engineer, what are the so called Higgs branch and Coulomb branch? thanks
@@tokajileo5928 Hey. I'm sorry but I haven't studied that far :/ That's the most difficult question I've received, haha. I've studied up til the beginner's level of the string theory.
@@ReumiChanneldon't study string theory
@motherisape ? Why? And i alrdy have
@@ReumiChannel will it get any result ?
Here you "derive" the EM field tensor from the scalar and 3-vector potentials which together constitute a 4-vector potential.
But why not first define the EM field tensor from the definitions of the E and B fields? dp/dt = qE + qv × B and dW/dt = qE⋅v ?
Cuz i thought this is what most people would want to know.
If you already know how to explain that, you should make one about it! :) But I think that is a separate topic.
Hey i have a question, in my textbook by Griffiths it explains how to go from the usual Maxwell equations to the tensor form of the equations and then it shows how F^\mu
u can be written in terms of the 4-vector potential, but can the dual tensor G^\mu
u also be written in terms of 4-vector potentials? if so, why isnt this done in the book? is it because this would just give G^\mu
u = 0? Thank you:)
Thats a great question, and you are right. For the dual tensor, its simply 0.
It's not shown in the textbook , but neither does the field tensor. Griffith only shows how to use it, it never showed how they got the expression. And thats what i showed here. How to derive the electromagnetic tensor.
Why covariant vectors have (-ct, x,y,z) the minus sign in front of ct?
If u dot product it, this becomes related to the pythagorean theorem ct^2=x^2+y^2+z^2
@@ReumiChannel thank you. And why can't the electric and magnetic fields be represented as four-vectors instead of a tensor?
@@nick45be Think again how I derived the rank2 tensor for the EM field. It just had to be rank2
@10:11 , how no?
Sir, Which text is your reference ?
I figured it out by myself. Did you like it? Should I write a textbook? :D
@@ReumiChannel great 💫🪄 u r awesome
Say that one line again