How does the intensity of light received diminish as distance from a star increases?
Answer
Following the inverse-square law
The apparent intensity of light observed from a star decreases rapidly as the separation between the observer and the star increases. This relationship is strictly governed by the inverse-square law. This physical principle dictates that the intensity of the received light drops off in proportion to the square of the distance separating the source and the observer. Therefore, even if a distant star has a fixed intrinsic luminosity determined by its mass and age, its perceived dimness is primarily a function of this vast separation, not necessarily a failure in its energy production.
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