Airships past and present, together with chapters on the use of balloons in connection with meteorology, photography and the carrier pigeon . Fig. 70.—Other shapes of Hargrave kites. 118 AIRSHIPS PAST AND PEESENT. which it was possible to extract sparks 10 ft. long. Many scientificmen followed in his footsteps, and applied his methods to thestudyj)f atmospheric electricity, and in Philadelphia a club wasfounded for the purpose, called The Franklin Kite Club. The first scientific investigation into the problem of the kitewas published by the celebrated mathematician Euler in 1756;and lately the
Airships past and present, together with chapters on the use of balloons in connection with meteorology, photography and the carrier pigeon . Fig. 70.—Other shapes of Hargrave kites. 118 AIRSHIPS PAST AND PEESENT. which it was possible to extract sparks 10 ft. long. Many scientificmen followed in his footsteps, and applied his methods to thestudyj)f atmospheric electricity, and in Philadelphia a club wasfounded for the purpose, called The Franklin Kite Club. The first scientific investigation into the problem of the kitewas published by the celebrated mathematician Euler in 1756;and lately the American meterologist Kotch, director of theBlue Hill Observatory at Boston, has made further publicationson the subject, with the help of his assistant, Marvin. The partwhich is played by kites in meteorology at the present day willbe discussed in a later chapter, and they are also usefully appliedfor military purposes in a variety of ways. It has been thought
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Keywords: ., bookcentury1900, bookdecade1900, bookpubl, booksubjectaeronautics
