H - waves at boundaries
PX154 - H1 - fixed and free ends
PX154 - H2 - two strings joined together - transmission and reflection
PX154 - H3 - standing waves and normal modes
PX154 - I1 - the nature of light
PX154 - I3 - polarized and unpolarized light
PX154 - I4 - propagation of light
PX154 - I5 - snell's law
PX154 - I6 - transmission and reflection coefficients for light