 | United States. Weather Bureau - 1903 - 372 pages
...mercury remaining in the tube will, at sea-level stations, be about 30 inches high. The weight of this mercury is sustained by and exactly balances the downward...the surface of the mercury in the cup. The height of such a mercurial column, therefore, becomes a measure of the pressure of the air, and Torricelli seems... | |
 | Ernest John Andrews, Howard Newell Howland - 1903 - 464 pages
...mercury weighs 13.6 g., the mercury will weigh 1033.6 g. ; consequently, according to Pascal's Law, the downward pressure of the air upon the surface of the mercury must be 1033.6 g. per square centimeter. The pressure of the atmosphere is not always the same, and... | |
 | Ernest John Andrews - 1906 - 472 pages
...mercury weighs 13.6 g., the mercury will weigh 1033.6 g. ; consequently, according to Pascal-s Law, the downward pressure of the air upon the surface of the mercury must be 1033.6 g. per square centimeter. The pressure of the atmosphere is not always the same, and... | |
 | Joseph Albertus Culler - 1906 - 440 pages
...mercury fell to some point, -B, the length of the column then being AH, about 29 inches, or 73 cm. The pressure of the air upon the surface of the mercury in the vessel is just balanced by the downward pressure of the column of mercury in the tube. As long as the... | |
 | United States. Weather Bureau - 1908 - 60 pages
...of mercury remaining in the tube is, at sea-level stations, about 30 inches high; the weight of this mercury is sustained by and exactly balances the downward...the surface of the mercury in the cup. The height of such a mercurial column, therefore, becomes a measure of the pressure of the air, and Torricelli seems... | |
 | Henry Lee Heiskell, United States. Weather Bureau - 1908 - 62 pages
...of mercury remaining in the tube is, at sea-level stations, about 30 inches high; the weight of this mercury is sustained by and exactly balances the downward...the surface of the mercury in the cup. The height of such a mercurial column, therefore, becomes a measure of the pressure of the air, and Torricelli seems... | |
 | United States. Weather Bureau - 1909 - 116 pages
...mercury remaining in the tube will, at sea-level stations, be about 30 inches high. The weight of this mercury is sustained by and exactly balances the downward pressure of the air upon the surface of the mercuryVin the cup. The height of such a mercurial column, therefore, becomes a measure of the pressure... | |
 | Benjamin Warner Snow - 1909 - 810 pages
...air before them as they move down. The air is thus gradually removed from this enlargement : and the pressure of the air upon the surface of the mercury in the cistern at A causes the mercury ultimately to stand at the height AB in the barometer tube. When the... | |
 | John Oren Reed, Karl Eugen Guther - 1910 - 298 pages
...follows that the weight per unit area of this column of mercury, 76 cm in height, must be balanced by the downward pressure of the air upon the surface of the mercury in the dish. If for any reason the atmospheric pressure change, the corresponding difference in the height... | |
 | New York State College of Agriculture - 1911 - 1248 pages
...atmosphere because it presses only on one side, thus the column of mercury is kept in the tube by the pressure of the air upon the surface of the mercury in the cup. Since the tube was completely rilled with mercury before it was inverted, the space at the top of the... | |
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The weight of this mercury is sustained by and exactly balances the downward pressure of the air upon the surface of the mercury in the cup. The height of... 
