Speed of Light Formula

The speed of light in a vacuum is a fundamental constant denoted by the letter 'c'. It's value is:

* c = 299,792,458 meters per second (m/s)

Gamma Rays vs. Radio Waves

* All electromagnetic radiation travels at the speed of light in a vacuum. This includes gamma rays and radio waves.

Key Point: The speed of light is constant, regardless of the type of electromagnetic radiation. What changes between gamma rays and radio waves is their frequency and wavelength:

* Gamma rays have very high frequencies and very short wavelengths.

* Radio waves have very low frequencies and very long wavelengths.

Think of it like this: Imagine a wave in the ocean. The speed at which the wave moves is constant. However, the distance between crests (wavelength) and how often the crests pass a point (frequency) can vary.

In summary:

* Both gamma rays and radio waves travel at the speed of light.

* The difference lies in their frequencies and wavelengths, not their speed.