Circa 1665, Sir Isaac Newton derived the law of air resistance. Newton's experiments on drag were through air and fluids. He showed that drag on shot increases proportionately with the density of the air (or the fluid), cross sectional area, and the square of the speed. Newton's experiments were only at low velocities to about .Bashforth, Francis, A revised account of the experiments made with the Bashforth chronograph..., 1890; page 1, Cambridge at the University PressWilliam and Robert Cambers; Chamber's Encyclopaedia Volume VIII, 1891; page 438, J.B. Lippincott, USAPejsa, Arthur, New Exact Small Arms Ballistics: The Source Book for Riflemen, 2008; page 29, Kenwood Publishing
