Lecture18 - Big Bang, Black Holes No Holes, No Math...

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ig Bang, Black Big Bang, Black oles No Math Holes, No Math ASTR/PHYS 109 Dr. David Toback Lectures 17 & 18 The Evolution of the Universe Topic 1: The Early Universe Big Bang, Black Holes, No Math 1
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Prep for Today (Is now due) – L18 Reading: BBHNM 14 BBBHNM 14 Reading questions: hapter 14 Chapter 14 End-of-Chapter Quizzes: Chapter 12 Paper Stuff Paper 1: Misgraded? Let us know Paper 2: Misgraded? Let us know The Evolution of the Universe Topic 1: The Early Universe Big Bang, Black Holes, No Math 3 Paper 3: Due Wednesday
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Paper 3 What is the evidence for the Big Bang? Make sure to read all the instructions in CPR Due 1 week from today (Wednesday) f you want TA feedback, must be If you want TA feedback, must be submitted by Friday After that it’s best-effort by TA’s and first-come-first-served ame format at Paper 2 The Evolution of the Universe Topic 1: The Early Universe Big Bang, Black Holes, No Math Same format at aper 4
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Paper 2 Revision Will allow Paper 2 revisions ot happy about some of the quality of the Not happy about some of the quality of the papers and calibrations f you are not going to submit a good paper If you are not going to submit a good paper, then we aren’t going to give you a chance to revise rs If you aren’t doing well with calibrations, we expect you to ask for help If this doesn’t change, we won’t do revisions for the third paper The Evolution of the Universe Topic 1: The Early Universe Big Bang, Black Holes, No Math 5
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Unit 4: Evolution of the Universe Big Picture of the Evolution of the Universe: Temperature and ime Time Collisions and how they explain what we see he First Three Minutes The First Three Minutes After the First Three Minutes The Evolution of the Universe Topic 1: The Early Universe Big Bang, Black Holes, No Math 6
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The Evolution of the Universe Overview he Early Universe 1. The Early Universe 2. The First Three Minutes he next 300 000 years 3. The next 300,000 years 4. The next billion years he next ~13 billion years until today 5. The next 13 billion years, until today The particles are in Thermal Equilibrium oesn’t really depend too much on Doesn t really depend too much on what came before it The Evolution of the Universe Topic 1: The Early Universe Big Bang, Black Holes, No Math 18
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Big Bang Starts it All The Evolution of the Universe Topic 1: The Early Universe Big Bang, Black Holes, No Math 19
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Before a Millionth of a Second Lots of free particles at VERY high energies uarks Quarks Photons Electrons Others The Evolution of the Universe Topic 1: The Early Universe Big Bang, Black Holes, No Math 20
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Before a millionth of a Second Lots of free particles in Thermal quilibrium Equilibrium… The Evolution of the Universe Topic 1: The Early Universe Big Bang, Black Holes, No Math 21
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Quarks can combine in the Early niverse to make a proton but are Universe to make a proton, but are quickly broken apart by high energy hotons in the Universe photons in the Universe Quark
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This note was uploaded on 01/06/2012 for the course PHYS 109 taught by Professor Davidtoback during the Fall '11 term at Texas A&M.

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Lecture18 - Big Bang, Black Holes No Holes, No Math...

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