American Dictionary of the English Language, Vol. 1

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Author: Noah Webster

Eter

BAROM,’ETER, n. [Gr.weight, and measure.]

An instrument for measuring the weight or pressure of the atmosphere, consisting of a glass tube,hermetically sealed at one end, filled with quicksilver, well defecated and purged of air, and inverted in a basin of quicksilver. A column of quicksilver is then supported in the tube, of equal weight with the incumbent

atmosphere. This instrument was invented by Torricelli, of Florence, in 1643. Its uses are to indicate changes of weather, and to determine the altitude of mountains, by the falling and rising of the mercury. For this purpose,the tube is fixed to a graduated scale, so that the smallest variation in the column is visible.

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Chicago: Noah Webster Jr., "Eter," American Dictionary of the English Language, Vol. 1 in An American Dictionary of the English Language, Vol. 1 (New York: S. Converse, 1828), Original Sources, accessed April 23, 2018, http://www.originalsources.com/Document.aspx?DocID=DLWT759LNTDJSZM.

MLA: Webster, Noah, Jr. "Eter." American Dictionary of the English Language, Vol. 1, in An American Dictionary of the English Language, Vol. 1, New York, S. Converse, 1828, Original Sources. 23 Apr. 2018. www.originalsources.com/Document.aspx?DocID=DLWT759LNTDJSZM.

Harvard: Webster, N, 'Eter' in American Dictionary of the English Language, Vol. 1. cited in 1828, An American Dictionary of the English Language, Vol. 1, S. Converse, New York. Original Sources, retrieved 23 April 2018, from http://www.originalsources.com/Document.aspx?DocID=DLWT759LNTDJSZM.