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 331
g one plate from rubbing against the next. Thereis indeed a serious objection to their use, which lies in the factthat the changing of plates causes a great deal of dust to settle onthe sensitive surface of the gelatine, and produces a partial blurringof the image. There is no means of removing… … Fig. 194,—Aiguille Verte, taken with theVautier-Dufour apparatus by the VegaCompany, of Geneva. PHOTOGRAPHIC OUTFIT FOP BALLOON WORK. 311 to the conclusion that nothing is better than the old double-back.The flexible shutters, used in some double-backs are not to berecommended for balloon work; the…
Aeronautics
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