Tangential Magnetic Field Boundary Conditions

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In this video, I use Ampere’s law to determine he boundary conditions on the magnetic field (or H-field). This is one of the four boundary conditions important for figuring out how materials respond to light.

This is part of my graduate series on optoelectronics / photonics, and is based primarily on Coldren's book on Lasers as well as graduate-level coursework I have taken in the EECS department at UC Berkeley.

Hope you found this video helpful, please post in the comments below anything I can do to improve future videos, or suggestions you have for future videos.

[visashu]

Dear Jordan, You helped me a lot with these four boundary conditions videos. Thanks for that and I think the maxwell equation that you wrote needs a small correction in the first Integral of Electric flux density where it should have been integrating the change of elec flux density with respect to time(dD/dt) term. I would love if you could please derive the maxwell equations and make videos on them. Thanks

[Akshay-xoiy]

Sir, if you could be this impactful in snippet videos, I wonder how superb it would be attending your offline class. I hope to meet you sometime in the future.

[mgx]

3:45 I don't get how reducing the loop to zero area can eliminate the integral(D dS) term, but at the same time not eliminate Ipen (which also is an integral over the same surface).

[EEDJITTUGACHAITANYAKUMAR]

Dear Jordan, thanks for such a detailed explanation. How and why did you assume surface current density to be zero (K=0) and under what conditions it becomes zero..

[shiqiangec]

Dear Jordan, thanks for the video. Could you explain when it is equal to K=0? I am looking at a lot of texts to see if the standard transfer matrix method can be used for thin films containing metallic layers. In the Hecht for example, it looks like possible but I don't understand how you could neglect surface charges and currents for metals.

[simplesolutions]

which software have you used in this video to make videos... apart from some screen recording videos

[LL-mqgj]

8:30 didn’t the last video use the normal E?

[outrospectionall]

Why can't we collapse L to dl similar to collapsing t? I'm struggling to understand and generalise the intuition behind this

[bostangpalaguna]

excuse me, sir.. does 'penetrating current' the same term as 'displacement current' ?

[nazi]

sir u said u have used 2 out of 4 max eqs. but actually u used 3

[최은우-dt]

you sound a lot like casually explained