A Discourse Presented to the Most Serene Don Cosimo II., Great Duke of Tuscany, Concerning the Natation of Bodies Vpon, and Submersion In, the Water.Galilei, Galileo
Science
A Discourse Presented to the Most Serene Don Cosimo II., Great Duke of Tuscany, Concerning the Natation of Bodies Vpon, and Submersion In, the Water.
Galilei, Galileo
Hydrostatics; Specific gravity
_The words were these. That the Antagonists having an opinion, that
the Figure would alter the Solid Bodies, in relation to the
descending or not descending, ascending or not ascending in the
same_ Medium, _as_ v. gr. _in the same water, in such sort, that, for
Example, a Solid that being of a Sphericall Figure, shall descend
to the Bottom, being reduced into some other Figure, shall not
descend: I holding the contrary, do affirm, that a Corporeall Solid
Body, which reduced into a Sphericall Figure, or any other, shall
go to the Bottom, shall do the like under whatsoever other Figure,
{&}c._
[Sidenote: Place defined according to Aristotle.]
But to be in the water, implies to be placed in the water, and by
_Aristotles_ own Definition of place, to be placed, importeth to be
invironed by the Superficies of the Ambient Body, therefore, then
shall the two Figures be in the water, when the Superficies of the
water, shall imbrace and inviron them: but when the Adversaries shew
the Board of Ebony not descending to the Bottom, they put it not into
the water, but upon the water, where being by a certain impediment (as
by and by we will shew) retained, it is invironed, part by water, and
part by air, which thing is contrary to our agreement, that was, that
the Bodies should be in the water, and not part in water, and part in
air.
_The which is again made manifest, by the questions being put as
well about the things which go to the Bottom, as those which arise
from the Bottom to swimme, and who sees not that things placed in
the Bottom, must have water about them._
[Sidenote: The confutation of the Experiment in the Ebany.]
Public-domain text, read in full here on John Shaqi.
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