 | Charles Hutton - Mathematics - 1807 - 464 pages
...DE may be found, when the nature or shape of the vessel or bell CKL is known. On THE BAROMETER. 351. THE BAROMETER is an instrument for measuring the pressure of the atmosphere, and elasticity of the air, at any time. It is commonly made of a glass tube, of near S feet long, close... | |
 | Charles Hutton - Mathematics - 1811 - 494 pages
...may be found, when the nature or shape of the vessel or bell CKL is known. > OF THE BAROMETER. 389. THE BAROMETER is an instrument for measuring the pressure of the atmosphere, and elasticity of the air, at any time. It is commonly made of a glass tube, of near 3 feet long, close... | |
 | George Leoni - Barometers - 1841 - 76 pages
...mostly to be depended upon as indicative of about a week's fair weather. Directions far the Marine Barometer'. The Barometer is an instrument for measuring the pressure of the atmosphere and elasticity of the air at any time. It may be proper to premise, that it k not necessary so strictly... | |
 | Denison Olmsted - Astronomy - 1844 - 336 pages
...the tube in the well, and leaves no force to drive forward the column into the descending arm. 96. The Barometer is an instrument for measuring the pressure of the atmosphere. If the atmosphere be conceived to be divided into perpendicular columns, the barometer measures the weight... | |
 | Basil Jackson - Military reconnaissance - 1847 - 410 pages
...object, O, is below the point, B, or above the horizontal line, A H. 211 LEVELLING BY THE MOUNTAIN BAROMETER. The barometer is an instrument for measuring the pressure of the atmosphere, and elasticity of the air, at any time. It is commonly made of a glass tube, nearly three feet long,... | |
 | William Guy Peck - Mechanics - 1859 - 368 pages
...square inch, and whose height is the distance from DC\ to the surface of the water. The Barometer. 196. The BAROMETER is an instrument for measuring the pressure of the atmosphere. As already explained, it consists of a glass tube, hermetically sealed at one extremity, which is filled... | |
 | Thomas Lund - Hydrostatics - 1864 - 188 pages
...the mercury is sustained in it by the pressure of the air on the surface of the mercury in the basin. The BAROMETER is an instrument for measuring the pressure of the Atmosphere. It consists of a glass tube (see Prop, xvnI.) of uniform bore, closed at one end, and not less than... | |
 | Thomas Lund - Hydrostatics - 1864 - 204 pages
...the mercury is sustained in it by the pressure of the air on the surface of the mercury in the basin. The BAROMETER is an instrument for measuring the pressure of the Atmosphere. It consists of a glass tube (see Prop, xvin.) of uniform bore, closed at one end, and not less than... | |
 | Isaac Todhunter - Philosophy - 1877 - 452 pages
...at the lower temperature as 550 bears to 500, that is, as 11 bears to 10. XLV, THE BAROMETER. 499. The Barometer is an. instrument for measuring the pressure of the atmosphere ; we have already explained the principle of the instrument in Art. 489, and we have now to add a few... | |
 | William A. Harrison - Geomorphology - 1879 - 178 pages
...level, as its influence on light and on meteoric bodies has been recognised at that height. 132. Use of the Barometer.— The barometer is an instrument for measuring the pressure of the atmosphere. It consists of a glass tube about a yard in length, closed at one end and then filled with mercury,... | |
| |
Barometer. The barometer is an instrument for measuring the pressure of the atmosphere. 
