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Using everyday examples
(such as sunburn) and demonstrations with ordinary materials, Bob Symes
explains the principle of photosensitivity. He points out the different
reactions substances have to light, and then continues with a discussion of
chemical reaction in the presence of light. This leads to a look at
photography. (8 minutes)
ORDER CODE: FFMBVL1657V
VHS
VIDEO
ORDER CODE: FFMBVL1657DVD
DVD
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