Blown tungsten filament. Coloured scanning electron micrograph (SEM) of a blown tungsten filament from the electron gun of a scanning electron microscope. The shape of the blown ends of the filament can help to diagnose the cause of failure. A properly worn filament should have two evenly tapered ends,but this filament failed early. The rounded shape of each blown end indicates that over-heating was the most likely cause of failure. Magnification: x250 when printed at 10 centimetres wide | |
Licence : | Droits gérés |
Crédit: | Science Photo Library |
Taille de l’image : | 4517 px × 3888 px |
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Property Release : | Non requis |
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