University of Virginia Library

6636. PERPETUAL MOTION, Friction and.—

The diminution of friction is certainly
one of the most desirable reformations in mechanics.
Could we get rid of it altogether we
should have perpetual motion. I was afraid
that using a fluid for a fulcrum, the pivot (for
so we may call them) must be of such a diameter
as to lose what had been gained. I
shall be glad to hear the event of any other
experiments you may make on this subject.—
To Robert R. Livingston. Ford ed., v, 277.
(Pa., 1791)