The Diffusion of Gases Through Liquids and Allied Experiments

The Diffusion of Gases Through Liquids and Allied Experiments

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1913 edition. Excerpt: ...also provided with a graduated head (not shown), so that the whole turns and fractions of a turn may be read off, and the ratio of the diameter of the water level in fig. 11A and that of the screw 5 in fig. 13 must be known. In the figure the ratio of the areas is about ten to one. FlO. 11 a.--Absolute electrometer with disk carried by tubular hydrometer of aluminum. B.--Absolute electrometer with glass U-tube for adjusting levels. It is interesting to note in passing that on sudden advance or retreat of the screw 5 an impulsive wave passes through the liquid, suddenly raising and lowering the disk e often more than a centimeter and with considerable force. Direct and reflected waves are recorded in this way. In many of the experiments it was found sufficient to coat the screw (hot) with an adhesive layer of resin and beeswax. A well-fitting brass screw 0.75 inch in diameter and 20 threads to the inch was used. A socket of indurated fiber is even preferable, there being no appreciable leakage for some time. This avoids the complication of a stuffing box, but of course it will not last indef'nitely. In other experiments the hose it was branched and led to a glass reservoir, showing the water level on the U-tube principle. In such a case the water level w could be read off at the reservoir, by a cathetometer or some equivalent simpler attachment. In the latest form of apparatus the guard-ring cup holding the water at w was dispensed with and replaced by the prolonged tube g (now made of glass) as shown in fig. 11 B. Here gg is the glass tube 0.75 to 1 inch in diameter communicating with the hose below and holding the float / submerged as far as the water level w. The advantage of this form is this, that all parts of the floating tube may more

Product details

  • Paperback | 30 pages
  • 189 x 246 x 2mm | 73g
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236569040
  • 9781236569042