The Electromagnetic Spectrum. The electromagnetic (EM) spectrum is the range of all types of EM radiation . Radiation is energy that travels and spreads out as it goes – the visible light that comes from a lamp in your house and the radio waves that come from a radio station are two types of electromagnetic radiation.
Read moreHow do you explain the electromagnetic spectrum to a child?
The electromagnetic spectrum is set up based on this idea. The order from longest wavelength (lowest energy) to shortest wavelength (highest energy) is: radio waves, microwaves, infrared waves, visible light waves, ultraviolet waves, x-rays and gamma rays.
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