Airships past and present, together with chapters on the use of balloons in connection with meteorology, photography and the carrier pigeon . e repeated their experiment with smoke, which producedthe same effect. The smoke escaped through the pores of thepaper bag which acted as receiver ; the results were therefore nobetter than before, and the experiments were temporarily sus-pended. Priestleys work on the different kinds of air wastranslated into French in 1776, and suggested to them the useof hydrogen. They filled paper bags with hydrogen, whichescaped at once through the pores. Their next
Airships past and present, together with chapters on the use of balloons in connection with meteorology, photography and the carrier pigeon . e repeated their experiment with smoke, which producedthe same effect. The smoke escaped through the pores of thepaper bag which acted as receiver ; the results were therefore nobetter than before, and the experiments were temporarily sus-pended. Priestleys work on the different kinds of air wastranslated into French in 1776, and suggested to them the useof hydrogen. They filled paper bags with hydrogen, whichescaped at once through the pores. Their next idea was thatthe clouds were supported by electrical means. They lighted afire below their balloon and fed it with wet straw and first balloon was soon burnt; but they constructed another THE INVENTION OF THE AIE BALLOON. 11 which held 700 cubic feet and rose to a height of 1, they carried out their experiments on a larger scale,and the first public exhibition was made on June 5th, constructed a paper balloon, 112 ft. in circumference, andfilled it with hot air by means of a fire placed below it. The. Fig. -Ascent of a Moniffolfiere. balloon rose in the presence of the astonished spectators to aheight of 1,000 ft., but fell to the ground in ten minutes owing tothe gradual escape of the hot air. The Academie des Sciences, which has always turned itssearching glance on any mechanical improvement, forthwithinvited the brothers Montgolfier to repeat their experiment inParis. But before they were able to undertake the journey 12 AIESHIPS PAST AND PEESENT. Paris had become familiar with the sight of a balloon in Faujas de Saint-Fond started a subscription list forthe purpose of raising funds, and the physicist Charles wasentrusted with the practical work. Charles was familiar withthe properties of hydrogen from his laboratory work, and saw atonce that the lightness of the heated air had caused Montgolfiersballoon to rise. He there
Size: 1301px × 1922px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookpubl, booksubjectaeronautics
