Edward Jenner develops the first successful vaccine, the smallpox vaccine.
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Steam engine
invented by James Watt
A steam engine is a heat engine that performs mechanical work using steam as…
Octant
invented by John hadley Thomas godfrey
The octant, also called reflecting quadrant, is a measuring instrument used…
Weighing scale
invented by Richard Salter
A scale or balance is a device to measure weight or mass. These are also known…
Hydraulic press
invented by Joseph Bramah
A hydraulic press is a machine press using a hydraulic cylinder to generate a…
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Inventions that changed the world
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