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He had an idea of creating flying machines, a http://en.wikipedia.org/wiki/Tank, concentrated solar power, an adding machine, and the double null. A few of his designs were constructed or even possible during his life but some of his smaller inventions, such as a http://en.wikipedia.org/wiki/Bobbin winder and a machine for testing the tensile strength of wire were not expected to be made. Unfortunately they weren’t published and had no influence in later science.

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Original:

Leonardo is revered for his technological ingenuity. He conceptualised flying machines, a http://en.wikipedia.org/wiki/Tank, http://en.wikipedia.org/wiki/Concentrated_solar_power, an http://en.wikipedia.org/wiki/Adding_machine,^{http://en.wikipedia.org/wiki/Leonardo_da_Vinci#cite_note-AddingMachine-7} and the http://en.wikipedia.org/wiki/Double_hull, also outlining a rudimentary theory of http://en.wikipedia.org/wiki/Plate_tectonics. Relatively few of his designs were constructed or were even feasible during his lifetime,^{http://en.wikipedia.org/wiki/Leonardo_da_Vinci#cite_note-8} but some of his smaller inventions, such as an automated http://en.wikipedia.org/wiki/Bobbin winder and a machine for testing the http://en.wikipedia.org/wiki/Tensile_strength of wire, entered the world of manufacturing unheralded.^{http://en.wikipedia.org/wiki/Leonardo_da_Vinci#cite_note-9} He made important discoveries in http://en.wikipedia.org/wiki/Anatomy, http://en.wikipedia.org/wiki/Civil_engineering, http://en.wikipedia.org/wiki/Optics, and http://en.wikipedia.org/wiki/Fluid_dynamics, but he did not publish his findings and they had no direct influence on later science.^{http://en.wikipedia.org/wiki/Leonardo_da_Vinci#cite_note-10}