Physics Ch 67.1 Advanced E&M: Review Vectors (103 of 113) Why do we NEED the Dirac Delta Function?

To donate:

We will learn why we NEED the Dirac delta function. (We need it so we can calculate the divergence of a E field for a point charge.)

Next video in this series can be seen at:

[viktoriaelisabeth]

Thank you Prof van Biezen for this great educative video...really appreciate for your time and effort to put such great videos on youtube for everyone...

[davidmwakima]

"A prickly problem" hah! Sharp.

[foxhound]

In this example of a sphere, wouldn’t the divergence be zero everywhere, except at the Origen? As we move further from the Origen, the flux lines spread out, but they also decrease in magnitude, so the divergence may very well be zero, if I was to draw a box, not centered at the Origen?

[ethanborysewicz]

In a previous video regarding QM Momentum operator you said it was h-bar/i I learned that it was -i h-bar are these expressions equivalent?