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Whistler

whistler

(Science: physics) A wave in a plasma which propagates parallel to the magnetic field produced by currents outside the plasma at a frequency less than that of the electron cyclotron frequency, and which is circularly polarized, rotating in the same sense as the electrons in the plasma (about the magnetic field), also known as the electron cyclotron wave.

Whistlers are so-named because of their characteristic descending audio-frequency tone, which is a result of the dispersion relation for the wave (higher frequencies travel somewhat faster).

This tone was frequently picked up during world war I by large ground-loop antennas (which were actually being used to spy on enemy field telephone signals).


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Re: Pathogen Profile Dictionary

Hey whistler, thanks for the feedback and your absolutely correct on the index but when i designed the layout, i believed that most of my visitors would reach the website via search engines and so an index wouldn't be as essential ...

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by shuban
Tue Aug 10, 2010 3:25 am
 
Forum: General Discussion
Topic: Pathogen Profile Dictionary
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Pathogen Profile Dictionary

... classes and that you highlight key terms in your entries. Whats maybe missing is a glossary as well as an alphabetical index. Best wishes, whistler

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by whistler
Mon Aug 09, 2010 9:13 pm
 
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The Fiber Disease

... that reflect the individual's instructions. The results were presented last week at the Current Trends in Brain-Computer Interfacing meeting in Whistler, B.C. "This is really a proof-of-concept demonstration," Rao says. "It suggests that one day we might be able to use semi-autonomous ...

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by London
Thu Dec 21, 2006 3:29 pm
 
Forum: Human Biology
Topic: The Fiber Disease
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