Airships past and present, together with chapters on the use of balloons in connection with meteorology, photography and the carrier pigeon . as having assistedin taking the photographs,though in point of fact hehad never been in a bal-loon in his life. Heaccordingly printed someof the negatives, andadded words to the effectthat he had helped Sil-berer to make the exposures. In fact he stated that it was anact of courtesy on his part to allow Silberers name to appearon the photographs at all. He naturally found experts, bothlegal and technical, to help him in a court of law, and theyendeavoure
Airships past and present, together with chapters on the use of balloons in connection with meteorology, photography and the carrier pigeon . as having assistedin taking the photographs,though in point of fact hehad never been in a bal-loon in his life. Heaccordingly printed someof the negatives, andadded words to the effectthat he had helped Sil-berer to make the exposures. In fact he stated that it was anact of courtesy on his part to allow Silberers name to appearon the photographs at all. He naturally found experts, bothlegal and technical, to help him in a court of law, and theyendeavoured to persuade the jury that the photographer wasperfectly correct in his attitude. Silberer pointed out that it wasunreasonable to allow one man to undertake a polar expedi-tion at his own cost and make all the exposures, while anotherman quietly developed them at home and claimed all the jury eventually agreed that this view was sound, and Sil-berer, who had been accused of slandering his opponent, bycalling him a common thief and a downright swindler, wasacquitted. Balloon photography has received much assistance from the. Fig-. 181.—Triboulets panoramic apparatus.(From La Pliotograpliie en Ballon, by Tissandier. BALLOON PHOTOGRAPHY. 289 modern improvements in the art of constructing lenses, whichare now made of great focal lengths. In 1885 Tissandier andDucom employed one having a focal length of 22 in., and thisprobably represents the furthest limit likely to be reached bythe amateur. Cailletet has devised an arrangement for registering theheights reached in a balloon which does not carry observers. Acamera is carried which has two lenses, both of which project
Size: 2020px × 1237px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookpubl, booksubjectaeronautics
