A scale or balance is a device to measure weight or mass. These are also known as mass scales, weight scales, mass balances, and weight balances.
invented by Edward Jenner
The smallpox vaccine was the first vaccine to be developed against a contagious…
invented by James Watt
A steam engine is a heat engine that performs mechanical work using steam as…
invented by John hadley Thomas godfrey
The octant, also called reflecting quadrant, is a measuring instrument used…
invented by Geaorge Medhurst
An air compressor is a pneumatic device that converts power (using an electric…
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Inventions that changed the world
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