Halogen lamp filament. Coloured scanning electron micrograph (SEM) of a tungsten filament from a halogen bulb. This filament of this incandescent bulb is enclosed in a small quartz envelope inside the bulb. The quartz envelope contains the vapour of a halogen gas, such as iodine or bromine, which allows the filament to operate at a much higher temperature than in a conventional tungsten bulb. This results in greater brightness and a longer life than standard incandescent bulbs. Magnification: x1600, when printed 10cm wide. | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / EYE OF SCIENCE |
Taille de l’image : | 4500 px × 3884 px |
Model Release : | Non requis |
Property Release : | Non requis |
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