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Spring 2008  Astr 10L  Lab 11  
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"On the subject of stars, all investigations which 
are not ultimately reducible to simple visual 
observations are...necessarily denied to us...  
We shall never be able by any means to study their 
chemical composition."
--Auguste Compte, 1835 
  (before spectroscopy was discovered)



LAB 11: SPECTRA OF ATOMS [*.pdf, (and spectra *.pdf for reference)]
Current events quiz [10 min]
Study guide: [1], [2], [3]
SurveyMonkey.com pre-lab: M (3:00-6:00 PM), Tu, W, M (6:30-9:30 PM)
     (Due 12:00 PM on day of lab)

Splitting light 
     VIBGYOR vs. ROYGBIV
     (Fig. 6.5, Fix, _Astronomy: Journey to the Cosmic Frontier_, 4/e)
"Kirchhoff's laws"
     Continous, emission, absporption spectra
     (Fig. 16.6, _ibid_)
Emission spectra identification
     Periodic Table of Absorption/Emission Spectra Applet
     (University of Oregon, Department of Physics)

In-class lab work (*.mov)
     Find and sit in your groups
     Work cooperatively as a group
     Fill out worksheets individually
     Finished?  Turn in worksheets as a group
     One worksheet is randomly selected for group grading
     
NEXT WEEK
Download and read Lab 12 worksheets ahead of time
Bring calculator to lab for credit
Read current events study guide (posted Sunday 12:00 AM)
Answer Surveymonkey.com pre-lab (posted Friday 12:00 AM)

ANNOUNCEMENTS
Only two more labs in this semester
**ALL PROJECTS DUE THE WEEK OF LAB 13**