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http://www.bozemanscience.com/waves
http://www.youtube.com/watch?v=4S-MevRKGZs – Wave Properties
http://www.youtube.com/watch?v=dzyPT7kxp8M -EM Waves
http://www.bozemanscience.com/sound-waves
http://www.youtube.com/watch?v=snNwE6txxP0 – EM Spectrum Basics
http://www.youtube.com/watch?v=rLNM8zI4Q_M – Light by Khan
http://www.youtube.com/watch?v=I024MxO3AF0 - Light by Bozeman
https://www.youtube.com/watch?v=HPcAWNlVl-8 – NASA video on EM Spectrum
Simulators
http://www.animations.physics.unsw.edu.au/jw/EMspectrum.html
http://phet.colorado.edu/en/simulations/category/physics/sound-and-waves - simulators
http://www.cbu.edu/~jvarrian/applets/waves1/lontra_g.htm
EM Spectrum websites
http://imagine.gsfc.nasa.gov/docs/science/know_l1/emspectrum.html
http://lgfl.skoool.co.uk/examcentre.aspx?id=729
http://www.darvill.clara.net/emag/index.htm
http://missionscience.nasa.gov/ems/01_intro.html
http://cmb.physics.wisc.edu/tutorial/spectrum.html
http://www.krysstal.com/spectrum.html
http://home.howstuffworks.com/bug-zapper.htm
http://www.howstuffworks.com/radio.htm
Here is a link to a series of eight videos from NASA about the EM Spectrum: one intro video, one video
for each of the types of waves of the EM spectrum
http://www.youtube.com/playlist?list=PL09E558656CA5DF76