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Description: | Two carbon rods for arc lamps. In principle, the arc lamp operates using an electric current to create a live 'arc' between two points; in this case (and that of early arc lamps), these points were the end of carbon rods. In use, the rods would ignite, and gradually burn away during use. Other arc lamp types substitute typically tungsten points, contained in a chamber filled with gas e.g. xenon, neon, or mercury vapour. | License: | http://www.hmag.gla.ac.uk/spirit/rights/ | Publisher: | Hunterian Museum and Art Gallery, University of Glasgow | Rights holder: | Hunterian Museum and Art Gallery, University of Glasgow | Subjects: | ILLUMINATION : CANDLE : INCANDESCENT : | Source: | Hunterian Museum | Creator: | Hunterian Museum and Art Gallery, University of Glasgow | Identifier: | http://www.huntsearch.gla.ac.uk/cgi-bin/... | Language: | en-GB | Go to resource |
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