Abstract
By this “Radiosonde” the variation of temperature is measured by means of the variation of electrical capacity (wave length) in the main circuit with varying the ch_??_nge of lengths of mercury columns of the two small thermometers. (see Fig. 1 in the text.) For measuring the height and thickness of clouds black-bulb small thermometer is used and for the air temperature up to about 7000 meters ordinary small thermometer is used.
