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Scorpion or catapult, c 1750.

Scorpion or catapult, c 1750.
3 2 c m
actual image size: 32cm x 24cm


Model. The scorpion was a device used by the ancient Romans to throw stones. Dr Stephen Demainbray (1710-1782), a science lecturer, used this model to demonstrate a lever in action. The long arm, or tail, was pinned down and a misile was attached to it. When released, the weights on the short arms fell and the misile was hurled into the air.

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© Science Museum / Science & Society Picture Library

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