Summary and Transparencies for Class 11 - Tuesday, February 12, 2002

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Introduction

"A boat concealed in a ravine and a fish net in a swamp appear to be safely hidden. But at midnight a strong man may put them on his back and walk off with them. Dimwits do not understand that no matter how well one hides small things in larger ones, there is always a chance of losing them. But if you hide the universe in the universe, there is no way to lose it. This is the ultimate reality."

-- Chuang Tsu 6, circa 6th century B.C.E., Feng and English, trans.

"Nothing single comes from single. From a totality everything arises."

-- T.H. Stcherbatsky, Buddhist Logic

"There is no cause nor effect in nature; nature has but an individual existence, nature simply is."

-- Mach

"The universe is not twice given …"

-- Mach repeatedly

Today's Class

We finished our discussion of General Relativity. Covered were:

• Einstein's Synthesis
  …
  Expanding Universe - the Standard Hot Big Bang Model of the Universe
  Gravity Waves
  Black Holes

A supplementary document on Black Holes has been prepared. Linked to from the General Relativity notes, "convenience" links are also provided here: html pdf. With respect to that document, we talked about:

• Evolution of Stars
• Another Approach to Black Holes
• The Wormhole Solution
• Yet Another Approach to Black Holes