pneumatic trough

American  

noun

Chemistry.

1. a trough filled with liquid, especially water, for collecting gases in bell jars or the like by displacement.

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pneumatic trough British  

noun

1. chem a shallow dishlike vessel filled with a liquid, usually water, and used in collecting gases by displacement of liquid from a filled jar held with its open end under the surface of the liquid

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Etymology

Origin of pneumatic trough

First recorded in 1820–30

Example Sentences

See Examples For:

pneumatic trough

Priestley's pneumatic trough is at this day to be found in every laboratory; it is extremely simple and extremely perfect.

From Heroes of Science Chemists by Muir, M. M. Pattison (Matthew Moncrieff Pattison)

This, I at once learned, was the pneumatic trough, the vessel in which the gases were collected.

From The Life of the fly; with which are interspersed some chapters of autobiography by Teixeira de Mattos, Alexander

Dr. Paris refers to the case of a chemist of his acquaintance, who was suddenly deprived of sense as he stood over a pneumatic trough in which he was collecting this gas.

From Popular Education For the use of Parents and Teachers, and for Young Persons of Both Sexes by Mayhew, Ira

A weighed amount of oxide of silver is placed in a glass tube connected with a pneumatic trough.

From Scientific Culture, and Other Essays Second Edition; with Additions by Cooke, Josiah Parsons

A glass tube brings it into communication with a bell jar full of water on the shelf of the pneumatic trough.

From The Life of the fly; with which are interspersed some chapters of autobiography by Teixeira de Mattos, Alexander