About The Word Barometer

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Barometer

Barometer Definition And Meaning |
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What's The Definition Of Barometer?
[n] an instrument that measures atmospheric pressure
Synonyms | Synonyms for Barometer: Related Terms | Find terms related to Barometer: aerological instrument | aneroid barometer | aneroidograph | barograph | barometrograph | canon | check | criterion | degree | feeler | gauge | glass | graduated scale | hurricane-hunter aircraft | hygrometer | measure | model | norm | parameter | pattern | pilot balloon | probe | quantity | radiosonde | random sample | reading | readout | recording barometer | rule | sample | scale | sound | sounder | standard | straw vote | test | touchstone | trial balloon | type | vacuometer | value | weather balloon | weather instrument | weather satellite | weather vane | weathercock | weatherglass | yardstick See Also | aneroid | aneroid barometer | barograph | measuring device | measuring instrument | measuring system | mercury barometer | weatherglass Barometer In Webster's Dictionary \Ba*rom"e*ter\, n. [Gr. ? weight + -meter: cf. F.
barom[`e]tre.]
An instrument for determining the weight or pressure of the
atmosphere, and hence for judging of the probable changes of
weather, or for ascertaining the height of any ascent.
Note: The barometer was invented by Torricelli at Florence
about 1643. It is made in its simplest form by filling
a graduated glass tube about 34 inches long with
mercury and inverting it in a cup containing mercury.
The column of mercury in the tube descends until
balanced by the weight of the atmosphere, and its rise
or fall under varying conditions is a measure of the
change in the atmospheric pressure. At the sea level
its ordinary height is about 30 inches (760
millimeters). See {Sympiesometer}. --Nichol.
{Aneroid barometer}. See {Aneroid barometer}, under
{Aneroid}.
{Marine barometer}, a barometer with tube contracted at
bottom to prevent rapid oscillations of the mercury, and
suspended in gimbals from an arm or support on shipboard.
{Mountain barometer}, a portable mercurial barometer with
tripod support, and long scale, for measuring heights.
{Siphon barometer}, a barometer having a tube bent like a
hook with the longer leg closed at the top. The height of
the mercury in the longer leg shows the pressure of the
atmosphere.
{Wheel barometer}, a barometer with recurved tube, and a
float, from which a cord passes over a pulley and moves an
index.
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