Name: ch13 pt2 Fields from Charges (was ch 14 in 3rd Ed) @sspickle
Uploaded: 2014-09-03T01:29:31-0400
Duration: 8 min 17 s
Description: Reminder of how we get electric field from force + the dipole field formula.

Hints about Fermats Principle Assignment @sspickle

Uploaded December 2016 | Updated September 2026, 1 week ago

Use Fermat's Principle to deduce Snell's Law. Students struggle with this assignment. Here is a "quick hint" video showing the basic geometry and thinking to get Snell's Law from Fermat's Principle.

Hints about Fermats Principle Assignment

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ch13 pt2 Fields from Charges (was ch 14 in 3rd Ed)