I just discovered an interesting article on the development of an absolute
differential gravimeter that appeared in an unusual place. As a ametuer
seismometer builder, I found the article fascinating to see what the big
boys do. The article appeared in the March 2000 issue of "Laser Focus
World," on pp20-24. For you non-subscribers the article can be seen on the
web at:

http://lfw.pennwellnet.com/home/articles.cfm?ARTICLE_ID=66006&VERSION_NUM=1&
PUBLICATION_ID=12&Section=CurrentIssue

Now I have had trouble emailing long URL's before, so if this isn't
clickable, try to copy and paste it into the address box of your browser.
And if that doesn't work you can go the the magazine's main web address
http://lfw.pennwellnet.com/home/home.cfm
and then select "current Issue" then World News" then the article
"Interferometry, Fiber Coupling improves Gravimeters"

George Bush
Sea Ranch, CA, USA
38.74N, 123.5W
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