Electromagnetic radiation energy levels can vary to a significant degree depending upon the energy of source electrons or nuclei. For example, radio waves possess significantly less energy than do microwaves, infrared rays, or visible light, and all of these waves contain far less energy than ultraviolet light, X-rays, and gamma waves.

As discussed in Unit 10 of The Physics Classroom Tutorial, electromagnetic waves are waves that are capable of traveling through a vacuum. Unlike mechanical waves that require a medium in order to transport their energy, electromagnetic waves are capable of transporting energy through the vacuum of The "lost" energy is emitted in the form of electromagnetic radiation. Radio waves, TV waves, microwaves, X-rays, gamma rays, infrared rays, and ultraviolet rays are also examples of electromagnetic radiation. Visible light is only a small part of the electromagnetic spectrum. Light is a form of electromagnetic radiation that is very familiar to us. However, there are several other forms of electromagnetic (EM) radiation, such as X-rays, radio waves, and ultraviolet and infrared "light". Together, these different types of EM radiation make up the electromagnetic spectrum The entire wave system from the lowest frequency to the highest frequency is known as the electromagnetic spectrum. The shorter the wavelength, the higher its frequency and vice versa. White light, for example, is a form of radiant energy, and its frequency forms a tiny bit of the entire electromagnetic spectrum. Electromagnetic Energy Facts. The different types of electromagnetic waves are light, microwaves, x-rays, and TV and radio transmissions. Here is a list of the electromagnetic waves in the decreasing order of their frequencies that constitute the electromagnetic spectrum: Gamma rays, X-rays, Ultraviolet rays, Visible light rays, Infrared rays, Microwaves, Radio waves (FM), Radio waves (AM Electromagnetic waves can bring energy into a system by virt