Mechanics of the household; a course of study devoted to domestic machinery and household mechanical appliances (1918)
Keene, E. S. (Edward Spencer), b. 1864 · New York, McGraw-Hill book company, inc.; · leaf 218
dity recordsthan are obtainable with hygrometer, the psychrometer furnishesmeans of making more accurate observation. The psychrometershown in Fig. 159 is of the form used by the U. S. WeatherDepartment. Like the hygrometer, it is composed of a wet-bulb and a dry-bulb thermometer but no water cup… … 208 MECHANICS OF THE HOUSEHOLD ment is on account of the maximum evaporation which is ob-tained from the wet bulb for any atmospheric condition. Theevaporation which takes place from the wet-bulb thermometerin quiet air is not so great as that which occurs if the same air is inmotion. In moving…
Heating · Lighting · Plumbing
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