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25 inventions that are way older than you think
Discover 25 Inventions That Are Way Older Than You Think! From ancient batteries to Roman concrete, explore surprising origins of modern tech. Uncover hist ...
Who Was Abraham Jakub Stern? Abraham Jakub Stern (alternatively spelled Avraham Ya’akov Shtern) was a mathematician, translator, mechanical engineer, and a leading figure in the Haskalah. He worked on ...
An underwater ship -- A siphon for raising water -- Lifting weights by water, and a portable siphon -- Construction of sluices to raise ships to any height -- A machine worked by fire which can throw ...
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