The electromagnetic spectrum consists of all possible wavelengths and frequencies of electromagnetic radiation. It ranges from higher-energy gamma rays and X-rays (with shorter wavelengths and higher frequencies) to lower-energy microwaves and radio waves (with longer wavelengths and lower frequencies). The human eye can detect just one small portion—the visible range—of the electromagnetic spectrum.

Watch this video, which explores how scientists use electromagnetic radiation to learn about the Sun. As you watch, look for evidence that explains why light carries different amounts of energy and what effects this has on its wavelength.