On motion: a sand cone and a rotating sorting vessel
Two proposed experiments on circular motion and the vibration of loose matter
Under the heading 'On motion', the page proposes two experiments in loose-matter dynamics. A small sketch at the upper left shows a cone of sand on a board struck by a hammer. A larger drawing shows an open circular vessel mounted on a stand: Leonardo wants to fill it with coarse and fine pieces of the same material, or equal-sized pieces of various materials, mix them at random and set it in circular motion to observe where each settles, and he means to try the same with powder and a blow.
On this page
Sorting mixed matter by circular motion
In this circle Leonardo wants to experiment with circular motion: to put inside coarse and fine pieces of the same material, or equal-sized pieces of various materials, keep them mixed at random, and see at the end of the motion what place each has chosen. He means to do the same with powder and a blow.
Cone of sand struck by a hammer
A small sketch, also headed 'On motion', shows a cone of sand resting on a board that is struck by a hammer. It records an experiment on how a blow sets loose matter into motion.