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The various designs of mercury barometers and manometers are briefly described, with a more extended discussion of the various design elements which may affect the achievable accuracy.Sources of error in measuring pressures are described in considerable detail, particularly for portable instruments, including sc * ale, temperature, gravity, capillarity, vacuum errors and return gas column.Methods of minimizing those errors and of making the corrections, including extensive tables, are presented.Standard conditions are defined and the pertinent properties of mercury given.The paper contains 65 literature references.(Author).
The barometer remains the most important tool for evaluating and predicting the weather. This book explains why knowing accurate values of the atmospheric pressure can improve this process and benefit all applications. Ways to evaluate and calibrate aneroid and electronic barometers using readily available data by Internet or telephone are clearly described. Tactical applications to marine navigation are covered. The book also includes worldwide average monthly pressures and their standard deviations. With the exception of trained meteorological crews, barometers in the past were used at sea primarily to learn if the pressure was going up or down, and whether it was doing this rapidly or slo...
Excerpt from Barometers and the Measurement of Atmospheric Pressure: A Pamphlet Information Respecting the Theory and Construction of Barometers on General; With Summary of Instructions for the Care and Use of the Standard Weather Bureau Instruments Barometers and the Measurement of Atmospheric Pressure: A Pamphlet Information Respecting the Theory and Construction of Barometers on General. With Summary of Instructions for the Care and Use of the Standard Weather Bureau Instruments was written by C. F. Marvin in 1909. This is a 109 page book, containing 36998 words and 7 pictures. Search Inside is enabled for this title. About the Publisher Forgotten Books publishes hundreds of thousands of ...