Torricellian vacuum

British  

noun

1. the vacuum at the top of a Torricellian tube

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Etymology

Origin of Torricellian vacuum

C17: named after E. _Torricelli

Example Sentences

In 1800 he became a secretary of the society, and in the following year he presented the important paper or series of papers, entitled “Experimental Essays on the constitution of mixed gases; on the force of steam or vapour of water and other liquids in different temperatures, both in Torricellian vacuum and in air; on evaporation; and on the expansion of gases by heat.”

From Project Gutenberg

This method was developed by Hofmann in 1868, who replaced the short tube of Gay-Lussac by an ordinary barometer tube, thus effecting the volatilization in a Torricellian vacuum.

From Project Gutenberg

The mercury instantly sank to nearly 30 in. above the surface of the mercury in the basin, leaving in the top of the tube an apparent vacuum, which is now called the Torricellian vacuum; this experiment is sometimes known as the Torricellian experiment.

From Project Gutenberg

The latter showed that the Torricellian vacuum was not essential to the phenomenon, for the same glow was apparent when mercury was shaken with air only partially rarefied.

From Project Gutenberg

The column sank, but it ceased to sink at a height of thirty inches, leaving the Torricellian vacuum over-head.

From Project Gutenberg