An Experiment on Two Falling Balls
How to test whether two equal weights stay in contact throughout their fall
This page, filled entirely with text and no diagram, describes how to carry out an experiment on falling bodies. Two balls of equal weight and shape are to be dropped from a great height so that they touch one another at the instant the fall begins, while an observer on the ground watches whether they remain in contact all the way down. Leonardo insists the trial be repeated several times so that no chance accident falsifies the proof and deceives the investigator.
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Drop two equal balls and see if they stay in contact
To test the earlier conclusion about motion, two balls of equal weight and shape are released from a great height so that they touch at the start of the fall, while an observer on the ground judges whether they stay in contact throughout. The trial is to be repeated many times so that no accident falsifies the proof.