1. Long Spring
2. laser disc of superposition of spring
3. Shive wave machines, all three. to show reflection, transmission, impedance matching.
4. String, lowest modes
5. Ripple tank.
6. laser disc of ripple tank
7. Laser single and double slit

1. Laser single and double slit, red and green, white light diffraction.
2. Various emission spectra
4. Black body with Wien's law
5. Poisson's spot (get my notes from Hecht and from sommerfeld)
 

na emiss asorp
adjustable single slit
block one slit
wien's law, sun bulb, heater coil?

hi pressure na

Hi pressure sodium

Single Photon.