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Indiana, city, United States

(Encyclopedia)Indiana, industrial borough (2020 pop. 13,067), seat of Indiana co., W Pa.; inc. 1816. It is the principal supply and trading center for a bituminous-co...

Marly-le-Roi

(Encyclopedia)Marly-le-Roi märlēˈ-lə-rwä [key], town (1990 pop. 16,775), Yvelines dept., N France, on the Seine River near Versailles. Nearby is the hamlet of Marly-la-Machine, where in 1682 a huge hydraulic e...

flywheel

(Encyclopedia)flywheel, heavy metal wheel attached to a drive shaft, having most of its weight concentrated at the circumference. Such a wheel resists changes in speed and helps steady the rotation of the shaft whe...

compressor

(Encyclopedia)compressor, machine that decreases the volume of air or other gas by the application of pressure. Compressor types range from the simple hand pump and the piston-equipped compressor used to inflate ti...

governor, device

(Encyclopedia)governor, automatic device used to regulate and control such variables as speed or pressure in the functioning of an engine or other machine. A governor may be an electric, hydraulic, or mechanical de...

Fitch, John

(Encyclopedia)Fitch, John, 1743–98, American inventor, b. Windsor, Conn. Fitch began (1785) work on the invention of the steam engine and steamboat and secured soon afterward the exclusive right to build and oper...

Heron of Alexandria

(Encyclopedia)Heron of Alexandria hērˈŏn [key] or Hero, mathematician and inventor. The dates of his birth and death are unknown; conjecture places them between the 2d cent. b.c. and the 3d cent. a.d. He is beli...

catalytic converter

(Encyclopedia)catalytic converter: see internal-combustion engine. ...

Ikeda

(Encyclopedia)Ikeda, city, Osaka prefecture, S Honshu, Japan, on the Ina River. It is an industrial and residential suburb of Osaka with industries that include engin...

turbine

(Encyclopedia)CE5 Types of turbines turbine, rotary engine that uses a continuous stream of fluid (gas or liquid) to turn a shaft that can drive machinery. A water, or hydraulic, turbine is used to drive electr...