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The Temperature Correction of Barometers

Published online by Cambridge University Press:  06 July 2012

R. T. Omond
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Extract

In correcting the reading of a barometer to the freezing-point, it is customary to ascertain the temperature of the instrument by observing a thermometer attached to the brass frame, but it is doubtful how far this attached thermometer indicates the temperature of all parts of the barometer under the conditions in which most observations are made. In a Fortin barometer the level of the mercury in the cistern is adjusted to a fixed point at each observation, and we have only to consider the expansion with heat of the mercury and of the brass scale.

Type
Appendix
Information
Earth and Environmental Science Transactions of The Royal Society of Edinburgh , Volume 42 , 1902 , pp. 541 - 542
Copyright
Copyright © Royal Society of Edinburgh 1902

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