- Short Films
The electromagnetic (EM) spectrum is just a name that scientists give a bunch of types of radiation when they want to talk about them as a group. Radiation is energy that travels and spreads out as it goes– visible light that comes from a lamp in your house and radio waves that come from a radio station are two types of electromagnetic radiation.
This is a very nice short movie series from the ScienceAtNASA YouTube channel, explaining the basics of the EM spectrum. Going from the introduction to each type of EM waves in a bit of more detail. Well worth the watch.