Tuesday, October 28, 2008

Test Your Knowledge: The electromagnetic spectrum

Name the 7 main components of the electromagnetic spectrum.

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6 Comments:

Blogger 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  
Blogger 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  
Blogger 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  
Blogger Ketan said...

An eighth? According to whom?

October 28, 2008 at 11:22 AM  
Blogger 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  
Blogger 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  

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