This is a fundamental relationship in physics, represented by the equation:

c = λf

where:

* c is the speed of light (approximately 299,792,458 meters per second)

* λ is the wavelength (measured in meters)

* f is the frequency (measured in Hertz, or cycles per second)

This relationship holds true for all electromagnetic radiation, including visible light, radio waves, microwaves, X-rays, and gamma rays.