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See also:AUGUST See also:FRIEDRICH See also:GFRORER (1803–1861)
, See also:German historian, was See also:born at See also:Calw, See also:Wurttemberg, on the 5th of See also: 72; and Muller, " Uber Bunsen's Geysertheorie," ibid., 185o, vol . 79) . The See also:principal difference between the artificial and the natural geyser-tube is that in the latter the effect is not necessarily produced by two distinct See also:sources of heat like the two fires of the experimental apparatus, but by the continual influx of heat from the bottom of the See also:shaft, and the See also:differences between the boiling-points of 186° 225° the different parts of the column owing to 230° 241° the different pressures of the superincum- ° See also:bent See also:mass . This may be thus illustrated: C 249 AB is the column of water; on the right 255° See also:side the figures represent approximately the boiling-points (Fahr.) calculated according to the See also:ordinary See also:laws, and the figures on the See also:left the actual temperature of the same places . Both gradually increase as we descend, but the relation between the two is very different at different heights . At the See also:top the water is still 39° from its boiling-point, and even at the bottom it is 19°; but at D the deficiency is only 4° . If, then, the-stratum at D be suddenly lifted as high as C, It will be 2° above the boiling-point there, and will consequently expend those 2° in the formation of steam . |
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