What kind of light source can be considered a point Do a star, sun, incandescent lamp fit this definition?
October 29, 2020 | Education|
A point source is an idealized model of a light source. It is believed that a point source emits light uniformly in all directions, and its dimensions are much less than the distance to the illuminated surface. The stars can be considered a point source, the Sun is no longer there, and an incandescent lamp can be considered as such only at distances much larger than the lamp itself.
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