 | Thomas Baker (C.E.) - 1851 - 176 σελίδες
...in the tube, above the level of the mercury in the vessel. That the mercury is supported in the tube by the pressure of the air on the surface of the mercury in the vessel, is evident from placing the barometer under the receiver of an air pump (to be hereafter described).... | |
 | Richard Green Parker - 1855 - 416 σελίδες
...the tube, and stood at the height if about thirty inches; thus demonstrating the fact, that it was the pressure of the air on the surface of the mercury in the one case, and of the water in the other, that sustained the column of mercury in the tube, and of the... | |
 | Alfred White Sprague - 1856 - 414 σελίδες
...barometer-tube on the plate of the air-pump, and cover with a tall Torricellian receiver. Before exhausting, the pressure of the air on the surface of the mercury in the cistern will support this in the tube at about thirty inches.* Work the pump, and remove a portion... | |
 | Richard Green Parker - 1856 - 502 σελίδες
...the tube, and stood at the height of about thirty inches ; thus demonstrating the fact that it was the pressure of the air on the surface of the mercury in the one case, and of the water in the other, that sustained the column of meroury Vn the tube, and of the... | |
 | Frank Grant Johnson - 1856 - 98 σελίδες
...piston-rod, and cylinder. "When the rwtou is drawn up, a vacuum is made and the water is urged on to fill it by the pressure of the air on the surface of the water at A. It is by this principle that water is forced up the common pump. FIG'S. 14 & 15. Barometers.... | |
 | Josiah Parsons Cooke (Jr.) - 1859 - 146 σελίδες
...had the air been exposed to the pressure of 76 centim. ? Solution. — It can easily be seen, that the pressure of the air on the surface of the mercury in the pneumatic trough, measured by the height of the barometer at the time (75.4 centim.), was balanced... | |
 | Josiah P. Cooke, Jr. - 1860 - 754 σελίδες
...principles of the equilibrium of fluids, already established. The mercury is sustained in the tube by the pressure of the air on the surface of the mercury in the basin. Let us consider how much of this pressure is effective in producing the result. Consider, then, a section... | |
 | 1860 - 664 σελίδες
...33 or 3i inches in length, will all the mercury in the tube sink down into the vessel ? Xo. Why not? The pressure of the air on the surface of the mercury in the vessel supports the mercury in the tube. What height of mercury will the atmosphere in ordinary circumstances... | |
 | Henry Barnard - 1860 - 692 σελίδες
...or 34 inches in length, will all the mercury in the tube sink down into the vessel ? No. Why not ? The pressure of the air on the surface of the mercury in the vessel supports the mercury in the tube. What height of mercury will the atmosphere in ordinary circumstances... | |
 | Richard Green Parker - 1861 - 488 σελίδες
...the tube, ami rtood at the height of about thirty inches ; thus demonstrating tile fact that it was the pressure of the air on the surface of the mercury in the one case, and of the water in the other, that sustained tho column of mercury la the tube, au<l of... | |
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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. 
