Neon signs. Neon emission tube. A neon lamp consists of a glass tube containing neon gas at a low pressure and two metal electrodes at either end. When an voltage is applied,the gas becomes ionized and begins to glow as it transmits a current between the electrodes. Pure neon has a red-orange glow. Different colours can be achieved by the addition of impurities such as argon or krypton. Neon lights are more efficient than carbon filament lamps | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Williams, Day |
Taille de l’image : | 3780 px × 2550 px |
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