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Lec01-Jan20 - Astronomy/ Astrophysics/ Cosmology...

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Unformatted text preview: 1/20/10 Astronomy / Astrophysics / Cosmology Physics 109: Astronomy & Cosmology 01:750:109:01 Spring 2010 •  The applicaDon of physical principles to astronomical systems, including planets, stars, galaxies, and the universe as a whole. •  Who are we? Why are we here? Prof. Chuck Keeton •  Where are we? How did we come to be here? Jan. 20 Solar System Jan. 20 Jan. 20 Solar System Extrasolar Planets As of today: Atmospheres—greenhouse effect •  424 planets •  358 planetary systems Impacts •  ≥45 mulDple ­planet systems Tides Volcanoes Jan. 20 Comets and asteroids (ar$st’s concep$ons) Jan. 20 1 1/20/10 Stars: Birth and Death Stars Jan. 20 Jan. 20 Guiding Principles Galaxies and Quasars •  Astronomy is a physical science •  Astronomy is a quanDtaDve science Jan. 20 Jan. 20 Physical Principles Learning Goals pressure gravity •  Understand physical principles and their applicaDon to astronomical systems. heat measurement •  Become familiar with science as a way of knowing. •  Learn about exciDng developments in astronomy! atoms light Jan. 20 opDcs Jan. 20 2 1/20/10 Syllabus •  See hap://www.physics.rutgers.edu/~keeton/109 iClickers •  Designed to encourage acDve learning, to let us probe deeper into certain topics, and to help you keep up with the material. •  I pose quesDons during class. You respond using your iClicker remote. We discuss the results. •  You earn points—for parDcipaDng, and for answering correctly! Jan. 20 Jan. 20 iClicker Points How do you use an iClicker? •  Quiz quesDons: 1.  Turn on the iClicker remote by pressing the boaom “On/Off” buaon. –  1 point for responding + 4 points for correct answer •  Discussion quesDons: 2.  A blue “Power” light will appear at the top of the remote. –  first try: 1 point for responding + 1 point for correct –  discuss –  second try: 3 points for correct •  I will drop 20% of the points (to account for occasional Dmes when you miss class, forget your iClicker, …). Jan. 20 Jan. 20 How do you vote? How do you know your vote was received? •  When I ask a quesDon in class (and start the Dmer), select A, B, C, D, or E as your vote. Check your “Vote Status” light: –  Green light = your vote was sent AND received. –  Red flashing light = you need to vote again. •  You may vote as many Dmes as you like while the Dmer is running; only the last vote counts. Not sure you saw the light? Just vote again. Want to change your vote? You can revote as long as the Dmer runs. •  For discussion quesDons, aper the first vote I may ask you to discuss the quesDon with your neighbor(s). Jan. 20 Jan. 20 3 1/20/10 Registering your iClicker Sample QuesDon What are your plans for the companion course, PHY110? A.  B.  C.  D.  E.  I have already taken PHY110. I am taking PHY110 now. I will definitely take PHY110 in the future. I might take PHY110 in the future. I will never take PHY110. Jan. 20 Remote ID Jan. 20 Student ID = Sakai username www.iclicker.com/registration iClicker Dps •  Register your iClicker ASAP. –  Friday is prac$ce. –  Regular quizzes begin next week. •  Write your name/iniDals on your iClicker. •  If you bought a used iClicker, replace the baaeries. –  Do not use Duracell or rechargeable baFeries. •  Before using a new iClicker for the first Dme, pull the plasDc tab out of the baaery compartment. •  iClicker + liquid = bad news. •  Check out www.iclicker.com for FAQs. •  Contact [email protected] for help. Jan. 20 4 ...
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