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Consider the following concerning the relationship between light intensity and distance. a. Over the area of...

Consider the following concerning the relationship between light intensity and distance.

a. Over the area of what surface does the light from a point source spread?

b. Describe the rays of light as they move away from the filament of a light bulb.

c. Suppose you shine a laser beam through chalk dust. Why does the chalk dust make the beam more visible. Are you viewing light directly from the laser or is something else happening?

d. Compare how light from a laser spreads compared to light from a light bulb.

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