Because I have nothing better to post...

[alchymie]

I will post some terms used in optical physics. I learned these years ago.

Calculus of residues: How to clean a bathtub ring
Catoptric: A feline eye
Conic section: Funny paper
Corona: Someone who does autopsies
Exit pupil: A retiring student
Flux: Past tense of to flex
Grand canonical ensemble: Ecumenical council
Harmonic function: Concert
Hypotenuse: Animal like a rhinoceros but without horn on nose
Len: Single-sided optical element (plural lens)
Normal solution: The wrong answer
Poynting vector: Redundant term; all vectors point
Spectra: Female ghost
Spin operator: Ferris wheel owner
Torque: Conversation
Ultraviolet catastrophe: Bad sunburn
Watt: Will you please repeat that?