Merchant, F. W. (Francis Walter), 1855-1937, Chant, Clarence Augustus, 1865-1956 · Toronto : Copp Clark · leaf 286
er at the bottom of the tube. The poor conductivity of water is also strikingly shown in the following experiment. Pass the stem of a Galileo air-thermometer (§ 255) through a per-forated cork inserted into a funnel asshown in Fig. 303. Then cover thebulb of the thermometer to a depthof about I cm.… … Fig. 303.—Illustration of thenon-conductivity of water. at the surface. 276 TRANSFERENCE OF HEAT 313. Conduction in Gases. Gases are extremely poorconductors of heat. The conductivity of air is estimatedto be only about 0.000,049 of that of cojDper. Manysubstances, such as wool, fur, down, etc.,…
Physics
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