The electromagnetic spectrum refers to the range of all possible wavelengths of electromagnetic radiation, which includes radio waves, microwaves, infrared radiation, visible light, ultraviolet radiation, X-rays, and gamma rays.
These are the longest wavelengths in the electromagnetic spectrum and are used for long-distance communication.
This is the part of the spectrum that humans can see and is responsible for our sense of vision.
These are extremely high-energy waves with the shortest wavelengths in the spectrum. They are often produced during nuclear reactions.