Airships past and present, together with chapters on the use of balloons in connection with meteorology, photography and the carrier pigeon (1908)
Hildebrandt, A. (Alfred), b. 1870, Story, W. H. tr · New York, D. Van Nostrand company · leaf 272
ING. 251 in the following way. At an altitude of 29,000 ft. he was risingat the rate of 16 ft. per second, and in thirteen minutes, whenhe regained consciousness, he found that the balloon was fallingat the rate of 88 ft. per second. Therefore he calculated that hemust have risen to a height of… … Fig. 153.—The Kaiser attending the ascent of a recording balloon on theTempelhofer Feld, near Berlin. the aneroid coincided in position with a string fastened acrossthe basket, and that this was found to denote a reading of 7 in.,corresponding to an altitude of 37,000 ft. It has been pointed outby…
Aeronautics
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