From my quantum mechanics class...
Prof: Here's how you remember that when a wave runs into a hard boundary, it will experience a 180-degree phase change. This demo will hurt so I have to take off my glasses.
[Prof walks into a wall]
Prof: Now you see that I have experienced a 180-degree face (phase) change...
(In a subsequent class.)
Prof: Remember that individual eigenstates are stationary in space...
[Prof does a robot freeze in a funny position]
Prof: That's an eigenstate.
[Another pose in a funny position]
Prof: That's another eigenstate. Now I look like an idiot.
This prof has a very flamboyant persona. Awesome demos. Makes up for the less-engaging Powerpoint slides. He reminds me of Doc DS from Intro Chem at the 'Tute, who is seriously a Godfather/pimp. And Doc S has board technique that totally rocks. Having done "chalk talks" before, I realize how hard it could be to lecture coherently while writing down equations and responding to the class, etc...
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