Mercury discharge tube. Blue light emitted by a mercury vapour discharge tube. The tube contains mercury vapour at low pressure. When a current is applied,electrons in the mercury atoms are excited. Light is emitted when the excited electrons fall back to lower energy levels | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / FUNDAMENTAL PHOTOS / R. MEGNA |
Bildgröße: | 3649 px × 5262 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: |
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