ISU PHY 102 - Big Bang Review (6 pages)

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Big Bang Review



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Big Bang Review

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Lecture number:
22
Pages:
6
Type:
Lecture Note
School:
Illinois State University
Course:
Phy 102 - Atoms to Galaxies
Edition:
1

Unformatted text preview:

PHY 102 1st Edition Outline of Last Lecture I Review a Hubble Constant b Big Bang c Radiation d Matter condenses II Specific Laws a Weir s Law b Stefan Boitzmann Law III Expansion and Olber s Paradox IV Echo of the Big Bang Outline of Current Lecture I Big Bang Review II The First Epoch a Temperature not time b Predictions III Standard Model s Cosmic Zoo a Quarks b Radiation IV The Second Epoch These notes represent a detailed interpretation of the professor s lecture GradeBuddy is best used as a supplement to your own notes not as a substitute V The Third Epoch VI The Fourth Epoch VII The Fifth Epoch VIII Proton Proton Reaction IX The Sixth Epoch X The Seventh Epoch XI Summary Current Lecture I Big Bang Review a Evidence for the Big Bang i Hubble s law v HR shows that galaxies at greater distances move faster ii 2 7k scosmic background radiation iii Look back time shows evolution iv Theoretical models of the universe are consistent with observations b The expansion age of the universe is 1 H which gives 13 8 billion years c Farther out you go the further back in time you go II The First Epoch 1014K T infinity a Considerations i Time is not as important as temperature because temperature determines makeup of the universe 1 Astronomers do not understand the beginning of the universe 2 Temperatures at the beginning were near infinity ii Predictions do appear to match observations b Ignoring details for a moment radiation quickly condenses into quarks leptons and bosons c Quarks become hadrons with the number of matter particles slightly outnumbering the anti particles due to CP charge conjugation parity violation i Quarks are the smallest particle of matter if one can even say that d The universe is expanding and the material in the universe is simply being carried along by the expansion III Standard Model s Cosmic Zoo a Quarks are the building blocks of hadrons baryons mesons i We have never looked inside of a proton to see the quarks but from indirect observation we



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