AP Physics C: Electric Force, Field, & Gauss's Law 8: Deriving Gauss's Law

Please visit twuphysics.org for videos and supplemental material by topic. These physics lesson videos include lectures, physics demonstrations, and problem-solving.
My AP Physics B / AP Physics 1 and 2 lesson videos are designed for students who have never had physics before. These videos can also be used for "flipped classroom" teaching. My AP Physics C lesson videos are designed for students who are at least taking pre-calculus concurrently.

[@manuelgovin]

Nice video :)))