Light intensity and the inverse square law
Lesson 10 / 10
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I can explain why light intensity decreases further from a light source.
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Light waves spread out as they travel from a light source.
Further away from the light source, the same amount of light is spread out over a greater area.
This means the light intensity decreases with increasing distance from a light source.
Light intensity is inversely proportional to the square of the distance from a light source (inverse square law).
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