7.5.3 Maxwell's Stress Tensor 1/4

7.5.3 of Griffith's Introduction to Electrodynamics 2nd Ed
If we try to write the force per unit volume in terms of E and B alone, we get an equation that exhibits some sort of symmetry, but is still quite complicated.
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[@sunnypala7629]

A huge thanks from sunny jonathan you are awesome. Very simplified sr

[@darkfeffy]

At 2:00, you say 'gradient of E vector'. Should be 'divergence of E vector'. Good video. Thanks

[@nileshprasad6187]

Nice it was really explained well easy to understands

[@Jojirius]

Any good "how to differentiate a cross product" resources you would recommend? I know it is just the product rule in *form*, but I was curious about the exact derivation because we skimmed over that.

[@jg394]

If you know multi-variable calculus, it isn't hard to derive. It's just a lot of bookkeeping.

[@dbf72829]

Thanks for this my saviour

[@ozzyfromspace]

I have a question: aren’t the E’s different in the formulation of the force? A charge distribution, rho = Div(epsilon*E_1) and external field E_ext should be associated with two different E’s. Am I missing something here?

[@martinezsaul4300]

I have the same question. Do you know the answer now?

[@orchoose]

that coolest looking F i have ever seen ;)

[@akidnag]

U r doing it GREAT champ!! Although on 7:48 u r out of screen :P. Anyway it is nice what you are doing with all the vids ;) Greetings

[@cihatilmaz2270]

Can anyone tell me which novel has thooose equations?

[@prasanthyadla9783]

There's a difference between 'thou' (something) by 'thou' (t) and 'd' (something) by 'd' (t)....referring to partial derivatives in case of the former.Anyways,great video,thanks!!

[@EmpiricSchool1]

yeah, it should be divergence

[@aaquibmomin2916]

Looking for full page on screen 😥

[@Muradsahar]

at 3:35 how did you take the time derivative of E x B, is ordinary algebra applicable here.? like just distributing the derivative operator .!

[@Zero-ef4sc]

Pretty sure you can just expand E x B and then take the time derivative and prove it for yourself. Noting that E and B are just random fields, you'll realize that you can generalize it to say that any time derivative of a curl uses the chain rule.

[@m.d.lu.m.d9292]

THANKS

[@Clipaholick]

the goat

[@jg394]

I know. I suck. I think I bring it back into focus in the end, right?