Center of the Earth - wonderful serendipity (I like that word)
mouse-ducks at wanadoo.fr
Sun Mar 21 14:36:25 CET 2004
Quite unfortunately, I haven't had time to read through all the messages on
this intriguing subject, but I am saving them for later.
As I was browsing through the Cornell University collection of scanned
nineteenth-century American magazines & newspapers
(http://cdl.library.cornell.edu/moa/moa_browse.html) for my research, I
started going through the first issues of the Scientific American- and gues
what I saw on the first page of Vol 2 issue 1 (Oct 3, 1846)
be viewed as a gif image or a pdf document) ? ...
Philosophy of Gravity
A body carried beneath the surface of the earth becomes lighter, because
the matter then above it, is drawing it up, instead of down, as before. A
descent of a few hundred feet makes a sensible difference, and at the
centre of the earth, if a man could reach it, he would find things have
no weight at all; and there would be neither up nor down, because bodies
would be equally attracted in all directions.
Have a nice week!
More information about the DCML