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The following video is useful to see the development of theories of light.<br>

The following video is useful to see the development of theories of light.<br>

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Listen to Richard Feynman, renowned physicist talk about the nature of light.<br>

Listen to Richard Feynman, renowned physicist talk about the nature of light.<br>

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===Activity No # 1 - Thought Experiment - Radiation from the Sun===

===Activity No # 1 - Thought Experiment - Radiation from the Sun===