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Yi Xing was a buddhist monk who made the first model of a mechanical clock.
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The first eyeglassees were made in Italy ca. 1286
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Johannes Gutenberg invented the printing press ca. 1440 in the Holy Roman Empire. This invention made possible the precise and rapid creation of metal movable type in large quantities.
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The first known telescope came to public attention in the Netherlands. The credit of the original invention has been clainmed by three individuals: Hans Lippershey and Sacharias Jansen and Jacob Metius.
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Thomas Savery invented the first practical steam-powered engine that was a water pump. This invention solved the problem of pumping water out of coal mines.
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Humphry Davy, an English chemist, used charcoal sticks and a 2000-cell battery to create carbon-arc lighting.
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Hans Christian Oersted discovers the relation of electricity and magnetism in 1815.
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Invented by Thomas Edison. When first developed, it was used to record and reproduce sounds. As the cylinder or disc rotates a needle traces the wavy lines and vibrates to make the recoreded sound waves.
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Charles F. Brush invented wind power, which is the conversion of wind energy into a useful form of energy.
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portable two-way radio communication system made for the military
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invented in the United Sates for the purpose of weapons and large scale destruction.
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This invention is credited by scholars to the Chinese, who had been using it for navigation between the 9th and 11th century
