Lecture05 - Big Bang, Black ang, Holes No Holes, No Math...

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Big Bang, Black oles No Math Holes, No Math STR/PHYS 109 AS R/PHYS 09 Dr. David Toback Dr. Dav d oback ecture & 5 Introduction Topic 3: Going Small Big Bang, Black Holes, No Math 1 Lecture 4 & 5
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Prep for Today (Is now due) – L5 Reading: equired: BBBHNM: Chapter - Required: BBBHNM: Chapter 1 4 Recommended Reading: HOT: Chap 1- BHOT: Chap. 1 3 SHU: Chap. 1-2 TOE: Chap. 1 eLearning Quizzes: Warm-up and AMS End-of-Chapter Quizzes for Chapter 2 Reading questions: Introduction Topic 3: Going Small Big Bang, Black Holes, No Math 3 Two questions from Chapter 4 in eLearning
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Next Topic: Going Small Finished looking at various things in e universe going from the universe going from the sizes we know to the VERY big Next we do the very small Why?If we want to understand y the universe we need to know what’s in it and what its made of Why and how did it get to be the Introduction Topic 3: Going Small Big Bang, Black Holes, No Math 4 way it is?
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An Atom What atoms “look” like lke What we’re seeing is the electron “cloud” as it goes around the atom The realm of Physics 10 -9 meters or Introduction Topic 3: Going Small Big Bang, Black Holes, No Math 13 1 nanometer
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Inside a Carbon Atom Snapshot in time of 6 lectrons “orbiting” the electrons orbiting the nucleus More are clustered nearer the nucleus Cross hair gnore the “size” of the Ignore the size of the dots and the cross hair Atoms are “composite” things, not fundamental Introduction Topic 3: Going Small Big Bang, Black Holes, No Math 14 10 -10 meters
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The Central Part of the Atom Only the inner o electrons two electrons are visible Others outside the box Again, ignore the “size” of the dots 1 Introduction Topic 3: Going Small Big Bang, Black Holes, No Math 15 10 -11 meters
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Homing in on The Nucleus The dot at the center of the cross hairs is at its full size he electrons The electrons are outsize our ield of view field of view 10 -12 meters Introduction Topic 3: Going Small Big Bang, Black Holes, No Math 16
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The Structure of the Nucleus Can just start to see the “stuff” inside the nucleus he nucleus is not The nucleus is not fundamental 10 -13 meters Introduction Topic 3: Going Small Big Bang, Black Holes, No Math 17
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Protons and Neutrons A carbon atom has 6 protons ( blue ) and 6 neutrons ( grey ) ERY tightly VERY tightly packed 10 -14 meters Introduction Topic 3: Going Small Big Bang, Black Holes, No Math 18
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Inside the Proton Three quarks inside e proton the proton Protons are omposite composite Quarks are fundamental
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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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Lecture05 - Big Bang, Black ang, Holes No Holes, No Math...

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