Diagram, experiment on the forces on bullets by unknown artist Diagram of a device to experiment with a bullet (placed in a groove on a wooden beam, designated by the letter F). The horizontal beam is placed on a 'worm gear' (i.e. a worm screw and a worm wheel) and weight, which is held down by a frame. At the end of the beam are plates (marked E) which are used to increase or decrease the motion of the beam. The experiment tries to understand with the degree of force (or how many turns per minute) with which the bullet would start to move out of the cursor. For a detailed figure of the cursor see CLP/3i/14/3. Subject: Physics / Engineering [c17th Century]