Hot air balloon experiments, illustration. Two men holding a large bag over a fire, trapping the hot air in the bag to make it rise. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / DK IMAGES |
Bildgröße: | 3800 px × 2558 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |