Tungsten. Samples of the transition metal tungsten (W). Tungsten is a grey,hard,metallic element used extensively in steel alloys,where it imparts great hardness. Tungsten is also used in filament light bulbs and thermionic valves due to its high melting point (3410 degrees Celsius) | |
Licence : | Droits gérés |
Crédit: | Science Photo Library |
Taille de l’image : | 4193 px × 4193 px |
Model Release : | Non requis |
Restrictions : | - |