American practical navigator: an epitome of navigation and nautical astronomy (1914)
Bowditch, Nathaniel, 1773-1838, Logan, George Wood, 1868-1915, United States. Navy Dept. Bureau of Equipment · Washington, Govt. Print. Off · leaf 36
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 wrater, the thermometer will act in the same wayas if it nad a damp bulb. The wet-bulb… … FIG. G. 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: Temperature of the Difference between dry-bulb and wet-bulb readings. i 10° mometer.…
Navigation · Nautical astronomy
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