barograph

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barograph

barograph instrument used to make a continuous recording of atmospheric pressure. The pressure-sensitive element, a partially evacuated metal cylinder, is linked to a pen arm in such a way that the vertical displacement of the pen is proportional to the changes in the atmospheric pressure. The pen traces a record of pressure versus time on a chart, which is mounted on a drum rotated by a clockwork. Each chart usually provides one week's record. See barometer .

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"barograph." The Columbia Encyclopedia, Sixth Edition. 2008. Encyclopedia.com. 25 Dec. 2009 <http://www.encyclopedia.com>.

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barograph

A Dictionary of Earth Sciences | 1999 | | Â© A Dictionary of Earth Sciences 1999, originally published by Oxford University Press 1999. (Hide copyright information) Copyright

barograph Barometer that gives a continuous recording of air pressure. It is based on an aneroid instrument with levers attached to the vacuum chambers, and records a trace on a chart mounted around a clock drum.

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AILSA ALLABY and MICHAEL ALLABY. "barograph." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. 25 Dec. 2009 <http://www.encyclopedia.com>.

AILSA ALLABY and MICHAEL ALLABY. "barograph." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. (December 25, 2009). http://www.encyclopedia.com/doc/1O13-barograph.html

AILSA ALLABY and MICHAEL ALLABY. "barograph." A Dictionary of Earth Sciences. 1999. Retrieved December 25, 2009 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O13-barograph.html

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barograph

A Dictionary of Ecology | 2004 | | Â© A Dictionary of Ecology 2004, originally published by Oxford University Press 2004. (Hide copyright information) Copyright

barograph A barometer that gives a continuous recording of air pressure. It is based on an aneroid instrument with levers attached to the vacuum chambers, and records a trace on a chart mounted around a clock drum.

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MICHAEL ALLABY. "barograph." A Dictionary of Ecology. 2004. Encyclopedia.com. 25 Dec. 2009 <http://www.encyclopedia.com>.

MICHAEL ALLABY. "barograph." A Dictionary of Ecology. 2004. Encyclopedia.com. (December 25, 2009). http://www.encyclopedia.com/doc/1O14-barograph.html

MICHAEL ALLABY. "barograph." A Dictionary of Ecology. 2004. Retrieved December 25, 2009 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O14-barograph.html

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