Posted on 12/28/2004 9:57:07 AM PST by SunkenCiv
Continuing to cool the sodium atoms by this method requires the tuning of the laser upward in frequency toward the atomic resonant frequency because the Doppler shift will be smaller. This places a practical limit on how much cooling can be achieved, because the differential cooling rate is reduced and at a certain point the cooling mechanism is foiled by heating due to the random absorption and reemission of photons.
(Excerpt) Read more at hyperphysics.phy-astr.gsu.edu ...
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Archaeology/Anthropology/Ancient Cultures/Artifacts/Antiquities, etc.
George W. Bush will win reelection by a margin of at least ten per cent
Huh. I got the wrong footer template on the previous message.
Frozen Light: Cool NASA Research Holds Promise
Science Daily | NASA/Jet Propulsion Laboratory | 2003-05-22
Posted on 05/22/2003 11:42:45 AM PDT by sourcery
http://www.freerepublic.com/focus/f-news/916131/posts
Physics: "Putting The Weirdness To Work"
http://www.businessweek.com/magazine/content/04_11/b3874102.htm
March 26, 2004
Posted on 03/26/2004 5:10:10 PM PST by billorites
http://www.freerepublic.com/focus/f-news/1105926/posts
More to Mars than Rovers:
New Olympus Mons Picture from Mars Express = WOW.
Space Daily ^ | February 13, 2004
Posted on 02/13/2004 10:00:23 AM PST by cogitator
http://www.freerepublic.com/focus/f-news/1077539/posts?page=41#41
Wimpzillas (particle 1000 billion times more massive than proton)
leave tracks say astronomers
New Scientist ^ | 12:30 03 June 02 | Anil Ananthaswamy
Posted on 06/10/2002 11:17:08 AM PDT by dead
http://209.157.64.200/focus/f-news/697706/posts?page=34#34
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Please ping me on science stuff you post too.
So many interesting things are going on, it's hard to keep track.
Sure will. Also, check the "Unclassified" section of my links page sometime.
http://www.freerepublic.com/~sunkenciv/links
Thanks!
related:
ANOTHER COOL IDEA FROM TEXAS
(Physicists at UT Discovered "quantum refrigerator" to Cool Atoms)
U-WIRE | Aug. 10, 2005 | Amanda Pinkston
Posted on 08/13/2005 2:13:42 PM PDT by nickcarraway
http://www.freerepublic.com/focus/f-chat/1462839/posts
a laser Blast from the Past.
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