This tutorial introduces students to the concepts of electromagnetic waves, wavelength, and the electromagnetic spectrum. Diagrams and written descriptions explain how wavelength is measured and explore the traditional divisions of the spectrum: radio, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays.

No specific technical requirements, just a browser required

No cost

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Contributor: Locke Stuart
Goddard Space Flight Center (GSFC) Laboratory for Terrestrial Physics

Publisher: National Aeronautics and Space Administration (NASA)
Science@NASA, Imagers
http://science.hq.nasa.gov/kids/imagers/index.html