Joseph-Michel Montgolfier, French Aeronaut

Bildnummer 12654592
Joseph-Michel Montgolfier, French Aeronaut
Joseph-Michel Montgolfier (1740-1810) and Jacques-etienne Montgolfier (1745-1799) were the inventors of the Montgolfiere-style hot air balloon, globe aerostatique. On June 4, 1783, they flew their craft in front of a group of dignitaries. Its flight covered 1.2 miles, lasted 10 minutes, and had an estimated altitude of 5, 200-6, 600 ft. The brothers succeeded in launching the first manned ascent, when etienne made a tethered flight on October 15, 1783. Later, in December 1783, in recognition of their achievement, their father Pierre was elevated to the nobility and the hereditary appellation of de Montgolfier by King Louis XVI of France. At the time, the brothers believed they had discovered a new gas. However, in 1785, the buoyancy was shown to be caused by heated air, which is less dense than the surrounding atmosphere. The two brothers were honoured by the French Academie des Sciences.
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Credit: Science Photo Library / Science Source
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