Posted By SCOTT ZELENAK on 9/2/2008 at 10:23 PM
around the WEB tonight, looking for a metal fabricator to build two
Weisbach plumb rigs, when I came across this website.
I briefly whizzed through it and thought it was interesting.
detals an experiment where two plumb bobs suspended 4250 feet below the
surface were found to be FARTHER apart rather than CLOSER.
I'm going to have to read this one more carefully.
To read the rest of this thread go to
Nice mystery for tunnel surveyors...
September 3, 2008