Physical Science

Chapter 13: Light

Web Links


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Topic: Light Pollution

Visit these sites for more information about sodium vapor lights and light pollution. Use the information to complete the activity in your book.



Security Lights

( http://www.usda.gov/rus/electric/engineering/1999/securitylights.htm )
Light Pollution - San Diego Astronomy Association

( http://www.sdaa.org/index.cfm?fuseaction=lightpollution.info )
How does light pollution affect astronomers?

( http://curious.astro.cornell.edu/question.php?number=194 )
Light Pollution Fact Sheet

( http://www.prairieastronomyclub.org/light.htm )

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Topic: Holograms

Visit these sites to learn more about holograms. Use the information to complete the activity in your book.



Types of Holograms

( http://hyperphysics.phy-astr.gsu.edu/hbase/optmod/holog3.html )
Hand-Drawn Holograms

( http://www.amasci.com/amateur/holo1.html )
How Holograms Work

( http://www.holography.co.uk/questions/howholwork.htm )
History of Holograms

( http://inventors.about.com/gi/dynamic/offsite.htm?site=http://www.holophile.com/history.htm )
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