What role does the Inverse Square Law play in Electromagnetic Radiation?
The inverse square law is also pivotal in understanding the behavior of electromagnetic radiation, such as light, radio waves, and X-rays. The intensity of radiation emitted from a point source decreases with the square of the distance from the source. This is given by:
I = P / (4πr²)
Here, I is the intensity of the radiation, P is the power of the source, and r is the distance from the source. This principle is essential for astronomers to determine the luminosity and distances of stars and other celestial objects.
