27. one point, from Lecture 27, medium answers, a picture

(a) .2 Einstein's Equation. What are the names and what is the meaning of T and R in Einstein's tensor equation -8(pi)[G/c² ]T=R?

(b) .8 Big Bang Cosmology. The four pillars of the theory of the Big Bang are the Hubble Expansion, the Cosmic Microwave Background Radiation (CMBR), Nucleosynthesis, and the structure of the CMBR. For each pillar, say what property of the universe it refers to and give a key observation which supports it.

Revised October 26, 1997.