First hot air balloon demonstration,engraving. On 5 June 1783,the Montgolfier brothers gave their first public demonstration of the hot air balloon at Annonay,France. The brothers had previously tested their theory that hot air could lift a pocket of fine taffeta fabric from the ground,but needed to establish their claim to the invention of flight. Their public witnesses saw the balloon fly for ten minutes,covering 2 kilometres at an altitude of about 2000 metres | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Bildagentur-online / Tschanz |
Bildgröße: | 3159 px × 5543 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |