An informative explanation of the electromagnetic spectrum including many visuals and great explanations on how we can use the various parts of the spectrum every day.
NASA
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This site provides an interactive Java Applet that allows students to mix red, yellow, and blue to see what the resultant colors will be.
The Interactive Library
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Basic explanation and diagrams of atomic structure and how it relates to light energy.
Goddard Space Flight Center
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Need to study for Physics? Here are some questions to help you out!!!
StudyStack
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Diagrams, explanation and equations of light using mirrors and lenses.
Spark Notes
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Physical optics including text and interactive Java applets. Covers optical instruments as well as phenomena.
Science, Optics and You
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A nice tutorial on how microwaves work.
Microwave Ovens
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This site provides and interactive Java Applet that allows students to see the absortion and emission spectra of the elements of the Periodic Table. Elements are actually selected from the Periodic Table itself.
The Interactive Library
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This is a simulation of color addition.
Additive color applet
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