Wave Behaviour at Boundaries, Polarisation, Intensity, Malus' Law - Physics

This video explains the behavior of waves or wave pulses at boundaries and polarization, including transmitted and reflected waves at medium interfaces with different masses and velocities, what do you mean by polarization of electromagnetic waves in simple words using a polarizer, reflection and refraction example, and quantifying the effect of polarization on intensity using Malus' law. You will understand what happens when a wave reaches a boundary, and the meaning of wave polarization.

Wave behaviour at boundaries simulation https://www.physicsclassroom.com/Physics-Interactives/Waves-and-Sound/Boundary-Behavior/Boundary-Behavior-Simulation
Polarisation of light simulation https://ophysics.com/l3.html

0:00 Wave behaviour at boundaries and simulation
4:42 Polarization of waves and simulation
12:40 Wave polarization, intensity and Malus' law