Reflection, Transmission and Refraction of Waves

Content includes reflection of pulses from fixed and free barriers, transmission and reflection of pulses between springs of different density, ray diagrams, 2 dimensional wave diagrams, angle of incidence, angle of refraction, law of reflection, direction of bending in refraction, critical angle, total internal reflection, fiber optic cables, the physics of desert mirages and highway puddles. Includes IB style questions.
IB Physics Topic 4.3
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Table of Contents:

00:00 - Introduction
00:05 - PHET Simulation of pulse reflection
02:01 - Multiple Choice Question
02:38 - Pulse transitions between media
04:58 - 2 dimensional wave diagrams
06:53 - Refraction wave diagram
10:28 - What way does wave refract?
11:36 - Axis Analogy
12:15 - Slow to fast, fast to slow
13:14 - Multiple Choice Question
14:05 - Critical Angle & Total Internal Reflecti
15:59 - Fiber Optic Cable explained
17:04 - Desert mirages explained
19:13 - Fish eye view Refraction
20:32 - Summary

[namdao]

this really should have more views, now from your explanation and animation, i was able to understand it and make it some sense for myself, thanks a lot