Works Cited
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1) “Blue Skys and White Clouds.” Patterns In Nature: Light and Optics. 24 Nov. 2004 <http://acept.la.asu.edu/PiN/rdg/sky/sky.shtml>.

2) “Light and Refraction.” Physics 20. 24 Nov. 2004 <http://www.sasked.gov.sk.ca/docs/physics/u3c12phy.html>.

3) “Pendulum Clocks.” Infoplease. 23 Nov. 2004 <http://www.infoplease.com/ipa/A0855495.html>.

4) Serway, Raymond A, and John W Jewett, Jr. Physics for Scientists and Engineers. Belmont, CA: David Harris, 2004.

5) “Sound.” The Physics Classroom. 24 Nov. 2004 <http://www.glenbrook.k12.il.us/gbssci/phys/Class/sound/u11l2a.html>.

6) Walorski, Paul. Physics and Astronomy Online. 23 Nov. 2004 <http://www.physlink.com/Education/AskExperts/ae72.cfm>.

7) Why is the Sky Blue? 24 Nov. 2004 <http://www.why-is-the-sky-blue.org/why-is-the-sky-blue.html>.