Electromagnetic Spectrum Basics

Electromagnetism is all around us in world in which we live. 


We rely on electromagnetic waves to heat our food, carry cell phone calls, and even bring music to the radios in our cars. NASA uses this energy to study vegetation on Earth, monitor solar eruptions on the Sun and detect elements on another planet.


Here's a short video to illustrate the basics.


Images courtesy of NASA (National Aeronautics and Space Administration)