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50.0 MB (50.0 MB compressed)
5744 x 3043 pixels
48.5 x 25.7 cm ⏐ 19.1 x 10.1 in (300dpi)
SHEILA TERRY / SCIENCE PHOTO LIBRARY SHEILA TERRY / SCIENCE PHOTO LIBRARY
Leonardo's sketch of explosive cannon balls fired from large mortars. The cannon balls consisted of round shells fitted around iron spacers and stitched inside a pliable casing. After firing the projectiles exploded with large quantities of dust and smoke and burst into fragments. Cannon had generally been used in sieges. Leonardo aimed to design a weapon for use against small moving targets like troops.
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