Ringer in vacuum. A classic experiment demonstrating that sound propagates in elastic media, such as gases (ex. air) or solids, and cannot propagate in vacuum. An electrical alarm is secured through rubber feet inside a vacuum bell. Initially the sound of the alarm is heard. When a connected vacuum pump removes air from inside a vacuum bell, no sound of the alarm is heard. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Turtle Rock Scientific |
Bildgröße: | 7700 px × 3324 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |