FYI: Dark Matter Lecture
- "The Cosmic Cocktail: Three Parts Dark Matter"
- Prof. Katherine Freese (U Texas)
- Physics Colloquium: online 4pm Wed Apr 13
The Cosmic Microwave Background: Discovery and Average Properties
- discovery; Nobel-prize winning 1.5-page paper
- temperature
- spectrum: purely thermal within current limits
The Atomic Age
- microphysics -- birth of bound atoms in (re)combination: sketches
- U goes from ionized (plasma) to neutral (gas)
- U also goes from opaque to transparent
