Ketan.org: Test Your Knowledge: The electromagnetic spectrum

Tuesday, October 28, 2008

Name the 7 main components of the electromagnetic spectrum.

Rich said...: Sheesh? All seven? This is getting harder.

Radio, Microwave, IR, Visible light, UV, Gamma....

Um, 6. There's probably something between UV and Gamma.; October 28, 2008 at 10:52 AM
Ketan said...: Or maybe it's just getting out of your comfort zone :-)

I had to look one up, too, and then I kicked myself. You'll kick yourself, too, when you discover the one you're missing.; October 28, 2008 at 10:57 AM
Rich said...: I looked it up, and discovered there's actually an eighth component (that I had not heard of) as well.; October 28, 2008 at 11:04 AM
Ketan said...: An eighth? According to whom?; October 28, 2008 at 11:22 AM
Rich said...: 300-3000GHz is too high for microwave, and too low for IR.

http://en.wikipedia.org/wiki/Terahertz_radiation; October 28, 2008 at 12:06 PM
Ketan said...: I've hertzed of the terahertz, but all the references I've seen to the EM spectrum just list the 7. The boundaries are somewhat arbitrary. I've seen terahertz considered as a special case of microwave.; October 28, 2008 at 12:09 PM