pneumatic trough


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pneumatic trough

n
(Chemistry) 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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It covers the alchemical symbols that sorted materials and planets and the contributions of alchemist David Teniers the Younger in the seventeenth century, the building of order through Boyle's air pump, Priestley's gas-collecting pneumatic trough, Lavoisier's constant pressure gas pump and reaction vessels, and Lavoisier's table of simple substances, followed by research on the atomic elements and the elements above 92.