American practical navigator: an epitome of navigation and nautical astronomy (1914)
Bowditch, Nathaniel, 1773-1838, United States. Navy Dept. Bureau of Equipment, Logan, George Wood, 1868-1915 · Washington, Govt. Print. Off. · leaf 36
erature of the wet bulb is temporarilyraised above that of the dry, but only for a brief time, as the water quickly freezes;and inasmuch as evaporation takes place from the surface of the ice thus formedprecisely as from the surface of the water, the thermometer will act in the same wayas if it had… … Fig. 0. a Called a psychrometer. 30 INSTRUMENTS AND ACCESSORIES IN NAVIGATION. 63. Knowing the temperature of the wet and dry bulbs, the relative humidityof the atmosphere at the time of observation may be found from the following table: Tempera- Difference between dry-bulb and wet-bulb readings…
Navigation · Nautical astronomy
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