Fulgurite. Fulgurites are tubular,or more irregular,hollow lumps of a glassy substance that are found in natural quartz-rich sands or soils,where they are formed by lightning strikes. The sand melts into glass when it is briefly heated to a temperature in the range of 1,800 degrees Celsius | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Wiersma, Dirk |
Bildgröße: | 5315 px × 3543 px |
Modell-Rechte: | nicht erforderlich |
Restrictions: | - |