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" To explain the construction of the common barometer, and to shew that the mercury is sustained in it by the pressure of the air on the surface of the mercury in the basin. "
The Cambridge course of elementary natural philosophy, being the ... - Σελίδα 62
των John Charles Snowball - 1838 - 81 σελίδες
Πλήρης προβολή - Σχετικά με αυτό το βιβλίο

Our Weather

John S. Fowler, William Marriott - 1912 - 152 σελίδες
...inches ; but it will be seen that a column about thirty inches in height is maintained up the tube by the pressure of the air on the surface of the mercury in the bowl. A barometer of this form is called a cistern barometer. To obtain a satisfactory result from...

Journal of the Cleveland Engineering Society, Τόμος 5

Cleveland Engineering Society - 1913 - 450 σελίδες
...the lower, open end plunged into a cup of mercury so that the column of mercury is sustained solely by the pressure of the air on the surface of the mercury in the cup, the result being, of course, that the weight or pressure of the air exactly balances the weight...

Elements of General Science

Otis William Caldwell, William Lewis Eikenberry - 1914 - 328 σελίδες
...level of the mercury in the dish. The force which sustains the column of mercury at this height is the pressure of the air on the surface of the mercury in the dish. The downward pressure of the air, due to the weight of the air, is transmitted to the mercury...

Collected Papers on Spectroscopy

George Downing Liveing, Sir James Dewar - 1915 - 646 σελίδες
...three-way cock E is turned so as to shut the communication with D and open that between B and C. As the pressure of the air on the surface of the mercury in B diminishes the mercury falls both in A and in /, leaving a Torricellian vacuum above it, and, as...

First Course in General Science

Frederic Delos Barber, Merton Leonard Fuller, John Lossen Pricer, Howard William Adams - 1916 - 628 σελίδες
...experiment. The tube is shortened very much in the illustration. 211. Measuring the Atmospheric Pressure. — The pressure of the air on the surface of the mercury in the cup supports the mercury in the tube. The height of the mercury column thus shows the weight, or pressure,...

Science for Beginners: A First Book in General Science for Intermediate ...

Delos Falls - 1917 - 408 σελίδες
...measured from the surface of the mercury in the dish. 203 What holds the mercury up in the tube? It is the pressure of the air on the surface of the mercury in the dish. Is it not clear, then, that the height of the mercury in the tube will change as the weight of...

Efficiency Arithmetic: Advanced, Βιβλίο 3

Charles Ernest Chadsey, James Hamblin Smith - 1917 - 326 σελίδες
...is longer than 30 inches, the mercury will drop from the end of the tube, leaving a vacuum above it. The pressure of the air on the surface of the mercury in the dish will support a column of mercury 30 inches high at sea level. If one goes up in a balloon or climbs...

Science for Beginners: An Introduction to the Method and Matter of Science

Delos Fall - 1918 - 410 σελίδες
...measured from the surface of the mercury in the dish. 203 What holds the mercury up in the tube? It is the pressure of the air on the surface of the mercury in the dish. Is it not clear, then, that the height of the mercury in the tube will change as the weight of...

Essentials of Modern Chemistry

Charles Elwood Dull - 1918 - 478 σελίδες
...mercury in the tube stands 'ATMOSPHERE at a certain height above the level of the mercury in the bowl. The pressure of the air on the surface of the mercury in the bowl balances the weight of the column of mercury AB. As the air pressure is increased the mercury...

Science for Beginners: An Introduction to the Method and Matter of Science

Delos Fall - 1918 - 410 σελίδες
...measured from the surface of the mercury in the dish. 203 What holds the mercury up in the tube? It is the pressure of the air on the surface of the mercury in the dish. Is it not clear, then, that the height of the mercury in the tube will change as the weight of...




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