False-colour scanning electron micrograph of a pair of tiny,flower-like ice crystals. Snow & ice crystals have a characteristic hexagonal symmetry. Each crystal is made up from water molecules,arranged with 2 hydrogen atoms making an angle of 105 degrees with 1 oxygen atom. The fixed shape of the water molecule means they can assume a stable crystal arrangement only when arranged as a 6- branched figure. Despite essential hexagonal similarity no two crystals are identical because their growth is influenced by temperature,humidity,air currents etc.,& these conditions are never quite the same. Magnification: x400 at 35mm size,x600 at 6x4.5cm size | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Burgess, Dr. Jeremy |
Bildgröße: | 4158 px × 3206 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |