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Spring 2008  Astr 10  4/2  Lecture 3.4  
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"I ask you to look both ways.  For the road to a 
knowledge of stars leads through the atom; and 
important knowledge of the atom has been reached 
through the stars."
--Sir Arthur Eddington

TODAY: ...FIRST STAR I SEE TONIGHT
In-class activity 18 (*.pdf)
     Find and sit in your assigned groups
     Turn in group worksheet
Atoms, photons, and spectra (*.pdf)
     The Bohr Atom Interactive (*.swf)
     (McGraw-Hill Publishers)  
     Periodic Table of Absorption/Emission Spectra Applet (java)
     (University of Oregon, Department of Physics)
     Fig. 16.6
     (Fix, _Astronomy: Journey to the Cosmic Frontier_, 4/e)
H-R diagrams (*.pdf)
     Size Comparison of Several Stars
     (NASA Goddard Space Flight Center)  
CPS activity: Quiz 8 review
     You must use your own clicker for participation credit

NEXT TIME
Quiz 8 Announcements
     Wednesday, 4/9, 6:30-6:45 PM
     Closed-book, closed-notes
     Five multiple-choice questions
          (one for each Q8.x learning goal)
     No work needs to be shown; no partial credit
     No scantrons; circle answers directly on Quiz
     **USE YOUR OWN UNIQUE 4-DIGIT P.I.N.**

In-class activity 19 (*.pdf)
     OBAFGKM Poety Slam!