X-rays are on the electromagnetic spectrum, but they're a very long way up in frequency. http://en.wikipedia.org/wiki/Electromagnetic_spectrum http://en.wikipe

X-rays are on the electromagnetic spectrum, but they're a very long way up in frequency. http://en.wikipedia.org/wiki/Electromagnetic_spectrum http://en.wikipedia.org/wiki/Electromagnetic_spectrum http://en.wikipedia.org/wiki/File:Light_spectrum.png http://en.wikipedia.org/wiki/File:Light_spectrum.png