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Atmospheric engine

an early form of single-acting engine in which the power stroke is provided by atmospheric pressure acting upon a piston in an exhausted cylinder.
Historical Examples

The change of the “atmospheric engine” of Newcomen into the modern steam-engine was now completed in its essential details.
A History of the Growth of the Steam-Engine Robert H. Thurston

As we have seen, it was an atmospheric engine, in no sense a steam engine.
James Watt Andrew Carnegie

The essential features of the atmospheric engine were not new.
Stories of Invention Edward E. Hale

The cylinder was let down into the top of the boiler, and like Newcomen’s atmospheric engine had no cylinder cover.
Life of Richard Trevithick, Volume II (of 2) Francis Trevithick

This is the extent as far as I know of Savory’s claim to be the inventor of the atmospheric engine.
The Stoker’s Catechism W. J. Connor

This Piston T S, acts only one way, like that of an atmospheric engine, a thing now quite out of date!
A New Century of Inventions James White

On the other hand, the atmospheric engine was limited in its power only by the dimensions of its piston.
The Steam Engine Explained and Illustrated (Seventh Edition) Dionysius Lardner


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    . a technique of rendering depth or distance in painting by modifying the tone or hue and distinctness of objects perceived as receding from the picture plane, especially by reducing distinctive local colors and contrasts of light and dark to a uniform light bluish-gray color. Historical Examples To this linear perspective is added moreover an […]

  • Atmospheric pressure

    the pressure exerted by the earth’s atmosphere at any given point, being the product of the mass of the atmospheric column of the unit area above the given point and of the gravitational acceleration at the given point. a value of standard or normal atmospheric pressure, equivalent to the pressure exerted by a column of […]

  • Atmospheric tide

    a movement of atmospheric masses caused by the gravitational attraction of the sun and moon and by daily solar heating. Historical Examples This atmospheric tide is due, no doubt, to the same cause that produces the aqueous tides—the attraction of the moon. Memoirs of Service Afloat, During the War Between the States Raphael Semmes

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