A hydraulic accumulator is a pressure storage reservoir in which an incompressible hydraulic fluid is held under pressure that is applied by an external source of mechanical energy. The external source can be an engine, a spring, a raised weight, or a compressed gas.
invented by Thomas Edison
An electric light is a device that produces visible light from electric power.…
invented by Whitcomb Judson
A zipper, zip, fly, or zip fastener, formerly known as a clasp locker, is a…
invented by Sir William Crookes
The Crookes radiometer (also known as a light mill) consists of an airtight…
invented by Carl Josef Bayer
The Bayer process is the principal industrial means of refining bauxite to…
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