High-powered bulb. Researcher holding a high- powered arc lamp bulb at sunset. At full brightness this bulb generates light using thous- ands of watts of power. It will light up sports stadiums for evening games. Arc lamps use the bright light emitted by an electric arc (blue),a stream of electrons travelling between two electrodes. The central cylinder through which the arc is flowing contains halogen gas. This cylinder is made of quartz,a more resistant material than the surrounding glass oval. This researcher is from Siemens' Osram Sylvania Laboratory in Beverly,Massachusetts,USA | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Steger, Volker / Siemens |
Bildgröße: | 3543 px × 2639 px |
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