The steam engine theoretically and practically displayed, by G. Birkbeck and H. and J. Adcock

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1827
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Page 44 - ... the logarithm of a fraction is equal to the logarithm of the numerator minus the logarithm of the denominator.
Page 96 - Multiply the square of the diameter by .7854, or the square of the circumference by .07958.
Page 10 - ... and 1228 ; and the latent heat 890, 920, and 933. It was distinctly observed, however, that the tin vessel in which the steam was generated imparted heat to the surrounding air : and an experiment was made to determine the amount of this loss. It was found when the contained water was at 80, 1 was lost in five minutes ; and when at 60, 1 was lost in...
Page 31 - ... then a little liquid is passed through it to the sealed end. Heat is now applied by an argand flame to the bottom of C, which is filled with oil or water, and the temperature is kept steadily at 212 for some minutes. Then a few drops of quicksilver may be required to be added to D', till L and f be in the same horizontal plane.
Page 86 - We know now that the underlying principle is the same as in a mercurial barometer : it is the pressure of the atmosphere on the surface of the water in the well that pushes the water up into the pump.
Page 6 - ... of heat, which was generally in from four to six minutes. Afterwards the pan was covered with a disk of oiled paper, to prevent evaporation, which would have lessened the weight during the operation of weighing. • The heat of the room, during the experiments, was generally about 5G.
Page 38 - VI. The density of steam is nearly if not accurately proportional to its elasticity ; at least this may be affirmed of it within the limits of Mr. Southern's experiments, which extended to steam formed under a pressure of 120 inches of mercury, or of four atmospheres. Thus steam of elasticity = 40 inches of mercury required...
Page 31 - The recurved part of the tube is filled with mercury, and then a little liquid is passed through it to the sealed end. Heat is now applied by an Argand flame to the bottom of C, which is filled with oil, or water ; and the temperature is kept steadily at 212 for some minutes. Then a few drops of quicksilver may require to be added to D" till L" and l" be in the same horizontal plane.
Page 38 - ... applied, with a piston fitting it, so as to have very little friction, and to the rod of this was applied a lever, constructed to work on edges like those of a scale-beam, by which the resistance against the elastic force of the steam could be accurately determined; and at your suggestion, to be assured that no inaccuracy had crept into the calculation, by which this resistance through the medium of the lever was ascertained, an actual column of mercury of 30 inches high was substituted, and...
Page 10 - S3^; and if either of these sets of numbers be used in the calculation, according as one or the other of the equations is adopted to develope the results, they will be found to be...

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