A and B (fig. 58), con-nected by a tube. The two bulbscontain ether and ether vapour, theair having been exhausted from thembefore the apparatus was sealed up.The one bulb, A, is made ofblackened glass and inside it thereis a thermometer, the bulb of whichis in the ether, while the scale isvisible… … Fig. 58. A second thermometer mounted outside gives the tempera-ture of the air. To perform an experiment pour a little ether on themuslin covering of the bulb B. The ether evaporates, ab-sorbing heat in the process and thus cooling down the vapourin the bulb. Some of the vapour is condensed, and…
Heat · Light
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