A four-stroke (also four-cycle) engine is an internal combustion (IC) engine in which the piston completes four separate strokes while turning the crankshaft. A stroke refers to the full travel of the piston along the cylinder, in either direction.
invented by Carl Gassner
A zinc–carbon battery is a dry cell primary battery that provides direct…
invented by
A lighter is a portable device which generates a flame, and can be used to…
invented by Lester Allan
The Pelton wheel or Pelton Turbine is an impulse-type water turbine invented by…
invented by Zenobe Gramme
In electricity generation, a generator is a device that converts motive power…
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