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.
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NASA
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Need to study for Physics? Here are some questions to help you out!!!
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StudyStack
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This site has more of an explanation approach to each topic and while it may not cover as much "advanced" material, such as magnetism, electricity and related principles), it is a very good resource for mechanics and classic first semester college/high school concepts
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The Physics Classoom
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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.
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The Interactive Library
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Basic explanation and diagrams of atomic structure and how it relates to light energy.
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Goddard Space Flight Center
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Diagrams, explanation and equations of light using mirrors and lenses.
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Spark Notes
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A simple yet fraily comprehensive discussion of the properties and characteristics of light
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Johns Hopkins Universtiy
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Physical optics including text and interactive Java applets. Covers optical instruments as well as phenomena.
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Science, Optics and You
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A nice tutorial on how microwaves work.
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Microwave Ovens
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