What is the electric displacement field?

Discussing the definition of the electric displacement field D, why it's defined the way it is, and how its properties differ from those of the ordinary electric field E. Along the way, we also introduce electric susceptibility and permittivity.
Bound charge density: • Bound charge density: ...
Bound surface charge: • Polarisation and surfa...
About me: I studied Physics at the University of Cambridge, then stayed on to get a PhD in Astronomy. During my PhD, I also spent four years teaching Physics undergraduates at the university. Now, I'm working as a private tutor, teaching Physics & Maths up to A Level standard.
My website: benyelverton.com/
#physics #mathematics #electromagnetism #displacementfield #maxwellsequations #curl #divergence #displacement #vectorcalculus #irrotational #maxwellequations #boundcharge #freecharge #chargedensity #electriccharge #dielectric #electricfield #electricdipole #dipole #dipolemoment #dielectrics #insulator #materials #polarisation #polarization #vector #electrostatics #maths #math #science #education

[@mingmiao364]

These videos are awesome! Explaining single concepts in bite size pieces. One little suggestion: put the links of most immediate prerequisites (that are perhaps covered in previous videos) in the descriptions in case someone wants to refer back to it. Keep up the great work!

[@DrBenYelverton]

Thanks, I appreciate your support! Trying to keep things varied. You're right, probably a good idea to add those links!

[@Astartos22]

As a new EE PhD student going back to school after a few years in industry, these videos have been enormously helpful to me to brush up on my EM knowledge. Thanks so much for the uploads!

[@DrBenYelverton]

That's great to hear! Will leave a link to my EM playlist in case there's anything else useful in there: th-cam.com/play/PLTntRzhyShSE_a1iohdDjjgTDIxSkrHER.html

[@Astartos22]

@@DrBenYelverton thank you!

[@吳紹裘]

Having my EM final exam tomorrow, should have found this excellent video two weeks ago. Thank you for the great content!!!!

[@DrBenYelverton]

Thanks for saying so, and good luck!

[@tomaszchrobak-pv5yh]

What a great explanation. This should go viral one day

[@DrBenYelverton]

Thanks for your support, let's hope so!

[@Maritqqq]

Amazing video! All the concepts and extra insights are super nicely presented. This gives me a much better idea of how to view the electric displacement field. Thank you a lot!!

[@DrBenYelverton]

Glad to hear it! Thanks.

[@muhammedismailyaldzl4936]

Thanks for the video, I have been searching for this

[@DrBenYelverton]

I'm glad this helped!

[@TheJara123]

Great content, thanks

[@DrBenYelverton]

Thank you!

[@STKeTcH]

Thanks! You deserve a stipend

[@kenianova8867]

Incredible content!

[@DrBenYelverton]

Thank you!

[@theodoremercutio1600]

What an incredible video! Are you a professor?

[@DrBenYelverton]

Thanks for your kind words! No, just spent a few years teaching university Physics while I was a PhD student. I decided not to go down the academic path but I'm still very interested in the subject and find making these videos a good way to make sure I don't forget things!

[@theodoremercutio1600]

@@DrBenYelverton I see! You explained everything with such clarity and transparency that I just sorta took you for one. I'm sure you'd be a student favorite if you ever changed your mind.

[@DrBenYelverton]

Many thanks for saying so!

[@bigbang259]

thanks, it's not that easy to find smt like that on TH-cam