Tafeln zur Bestimmung des Wasserdampfgehaltes der Luft mittelst eines Haarhygrometers und Thermometers gerechnet und erläutert

Abstract

THESE tables have been prepared for use in place of a similar set of tables by Perntner, which were printed as an appendix to Jelinek's “Psychrometer tafeln.” They are issued by the Austrian Central Institute for Meteorology and Dynamics for use at Austrian meteorological stations. The tables give vapour pressure in millimetres in terms of the two arguments, dry-bulb temperature and relative humidity, the latter to be observed by means of the hair hygrometer. In a general discussion of the question of measurement of humidity, Dr. Schlein recommends the use of the hair hygrometer in preference to other methods, quoting a statement by Pircher that the indications of the hair hygrometer are independent of the air-pressure and of wind velocity. He also quotes a remark made by de Saussure in 1783: “When all other possible hygrometers have been tried, one will always fall back on the hair hygrometer.”

Tafeln zur Bestimmung des Wasserdampfgehaltes der Luft mittelst eines Haarhygrometers und Thermometers gerechnet und erläutert.

Von Dr. J. N. Dörr. Anleitung zur Behandlung eines Haar-hygrometers und zur Verwertung fur die lokale Wettervorhersage. Von Dr. A. Schlein. (Wien: Selbstverlag von Dr. A. Schlein, 1925.) n.p.