The Royal observatory, Greenwich. A glance at its history and work (1900)
Maunder, E. Walter (Edward Walter), 1851-1928 · London, The Religious tract society · leaf 238
the two thermometers will readthe same. But if the air be comparatively dry, moreor less evaporation will take place from the wet bulb,and its temperature will sink to that at which theair would be fully saturated with the moisture whichit already contained. For the higher the temperature,the… … THE SELF-REGISTERING THERMOMETERS. THE METEOROLOGICAL DEPARTMENT 237 or, in other words, the dryness of the air. The greatshed already alluded to is devoted to these companionthermometers. Very closely connected with atmospheric pressure,as shown us by the barometer, is the study of thedirection of…
Royal Greenwich Observatory · Astronomy
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