A thermometer is a device that measures temperature or a temperature gradient (the degree of hotness or coldness of an object).
invented by William Oughtred
The slide rule is a mechanical analog computer. The slide rule is used…
invented by Bartolomeo Cristofori
The piano is an acoustic, keyboard and stringed musical instrument in which the…
invented by William Cullen
The term refrigeration means cooling a space, substance or system to lower…
invented by John Roebuck
The lead chamber process was an industrial method used to produce sulfuric acid…
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Inventions that changed the world
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