Plasma globe. The central metal orb inside the glass sphere of a plasma globe. A plasma globe is a glass sphere filled with a gas at low pressure. In the centre is a metal ball charged with electricity. When the voltage is high enough,the electricity discharges across the sphere to the glass wall. The discharge ionises the gas along its path,causing it to emit light | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Lewis, G. Brad |
Taille de l’image : | 3558 px × 4824 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |