This Scottish engineer's separate condenser greatly improved steam-engine efficiency.

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Your new ahaJames Watt

Made engines much more efficient Source: James Watt ↗

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10This unbuilt nineteenth-century machine design by Charles Babbage included programmable operations and memory.RECALL
Charles Babbage's Analytical Engine
Ada Lovelace described an algorithm for it
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11This German engineer developed the compression-ignition engine that bears his surname.RECALL
Rudolf Diesel
Developed in the 1890s
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12This US industrialist's company licensed Nikola Tesla's polyphase AC motor patents in 1888.RECALL
George Westinghouse
Westinghouse helped commercialize alternating-current power systems, including technology licensed from Tesla. AC electrification involved…
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