Difference between revisions of "Barometer"
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== Description == | == Description == | ||
| − | An instrument used to measure [http://cameo.mfa.org/materials/fullrecord.asp?name=atmospheric | + | An instrument used to measure [http://cameo.mfa.org/materials/fullrecord.asp?name=atmospheric%20pressure atmospheric pressure]. First invented in 1643 by Evangeliseta Torricele, a mercury barometer consists of a glass tube filled with mercury. Atmospheric pressure exerts a force on the mercury causing it to rise and fall with changes in the weather. Normal atmospheric pressure (1 atmosphere) is defined as 760 torrs or 760 millimeters of mercury. |
== Synonyms and Related Terms == | == Synonyms and Related Terms == | ||
| − | Luftdruckmesser (Deut.); | + | Luftdruckmesser (Deut.); baromètre (Fr.); |
== Authority == | == Authority == | ||
| − | * | + | * Richard S. Lewis, ''Hawley's Condensed Chemical Dictionary'', Van Nostrand Reinhold, New York, 10th ed., 1993 |
| − | * | + | * Tom Rowland, Noel Riley, ''A-Z Guide to Cleaning, Conserving and Repairing Antiques'', Constable and Co., Ltd., London, 1981 |
| − | * | + | * Random House, ''Webster's Encyclopedic Unabridged Dictionary of the English Language'', Grammercy Book, New York, 1997 |
* ''The American Heritage Dictionary'' or ''Encarta'', via Microsoft Bookshelf 98, Microsoft Corp., 1998 | * ''The American Heritage Dictionary'' or ''Encarta'', via Microsoft Bookshelf 98, Microsoft Corp., 1998 | ||
Revision as of 06:54, 24 July 2013
Description
An instrument used to measure atmospheric pressure. First invented in 1643 by Evangeliseta Torricele, a mercury barometer consists of a glass tube filled with mercury. Atmospheric pressure exerts a force on the mercury causing it to rise and fall with changes in the weather. Normal atmospheric pressure (1 atmosphere) is defined as 760 torrs or 760 millimeters of mercury.
Synonyms and Related Terms
Luftdruckmesser (Deut.); baromètre (Fr.);
Authority
- Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
- Tom Rowland, Noel Riley, A-Z Guide to Cleaning, Conserving and Repairing Antiques, Constable and Co., Ltd., London, 1981
- Random House, Webster's Encyclopedic Unabridged Dictionary of the English Language, Grammercy Book, New York, 1997
- The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998