tag:blogger.com,1999:blog-3407624264627208128.post7285156269065871389..comments2024-01-26T21:38:25.924-08:00Comments on Duane's PoeTree: Jack Scott writesDuanesPoeTreehttp://www.blogger.com/profile/17053093400086634552noreply@blogger.comBlogger1125tag:blogger.com,1999:blog-3407624264627208128.post-59543906528272362152016-12-17T07:05:52.196-08:002016-12-17T07:05:52.196-08:00Ktesibios was a 3rd-century BCE Greek inventor and...Ktesibios was a 3rd-century BCE Greek inventor and mathematician and was probably the first head of the Museum of Alexandria. None of his written work has survived, though he wrote the first treatises on the science of compressed air and its uses in pumps and a cannon) and discussed the elasticity of air. Early in his life, when he was a barber, he invented a counterweight-adjustable mirror. He also invented the hydraulis (a water organ), a force pump for producing a jet of water or for lifting water from wells, and a clepsydra ("water thief"), the most accurate clock ever constructed until the Dutch physicist Christiaan Huygens detailed the use of pendulums to regulate clocks in 1656 and built a working prototype. The principle of the siphon has also been attributed to him.DuanesPoeTreehttps://www.blogger.com/profile/17053093400086634552noreply@blogger.com