A young boy uses a large mirror to concentrate solar energy to ignite a wooden board. The boy holds the wood exactly at the focus to concentrate all the light energy. This particular mirror will ignite a stick of wood in 1.5 seconds in full sunlight | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Kinsman, Edward |
Bildgröße: | 4500 px × 3000 px |
Modell-Rechte: | vorhanden |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: |
|