Demonstration to show that sound is carried by a movement of air. Two wooden boards clapped together disturb surrounding air,moving air in tube and jet from nozzle disturbs candle flame. From ''Sound'' by John Tyndall,London,1867 | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / UIG / Universal History Archive |
Taille de l’image : | 5178 px × 1689 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |