What does the inverse square law state regarding light intensity?

The inverse square law regarding light intensity states that the intensity of light (or any form of radiation) is inversely proportional to the square of the distance from the light source. This means that as you move away from the source of light, the intensity of that light decreases with the square of the distance. For example, if you were to double the distance from the light source, the intensity of the light would be reduced to one-fourth of its original value, since (1/(2^2) = 1/4).

This law applies universally to all point light sources and helps in understanding how light spreads over distance in three-dimensional space. It is crucial in fields such as physics, photography, and safety, particularly in areas concerning visibility and lighting safety in occupational health.

Other possible responses do not accurately reflect this relationship. Understanding the principle behind the inverse square law is essential for anyone involved in safety, light management, or environmental design, as it directly affects how lighting is implemented in various settings.