モンゴルフィエ兄弟
The science of lighter-than-air gasses, and specifically the properties of oxygen, had been discovered as early as 1774 by Joseph Priestley, who noted its lightness and explosive qualities when heated. The chemistry of lighter-than-air and heated gasses was eventually put to the test by the Montgolfier brothers, two paper manufacturers in France, while experimenting with heated air caught in paper bags.