Melting sulphur. A crucible with powdered sulphur, S, is heated over a Bunsen burner flame. It first melts to a straw-yellow liquid and then darkens to a red-brown colour. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Turtle Rock Scientific |
Bildgröße: | 8000 px × 3236 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |