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The Jeffersonian cyclopedia;

a comprehensive collection of the views of Thomas Jefferson classified and arranged in alphabetical order under nine thousand titles relating to government, politics, law, education, political economy, finance, science, art, literature, religious freedom, morals, etc.;
3 occurrences of jefferson cyclopedia
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6636. PERPETUAL MOTION, Friction and.—
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3 occurrences of jefferson cyclopedia
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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)