File:The Lane-Fox lamp.jpg
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Summary
[edit]DescriptionThe Lane-Fox lamp.jpg |
English: Two wires e e, which are connected with the mercury tubes f, are attached to the metal springs c, which are the carbon holders. These springs are regulated by the slide d consisting of insulating material. The tubes f and h pass through an india-rubber cork g; i is a layer of mercury, and over it is a layer of cement j. The glass vessel is exhausted by means of the tube h.
Lane-Fox prepared the carbon filaments for his lamps in the following manner: Hemp threads were wound round a piece of coke having a knife-edge at one side; and the whole placed in an oven. During carbonisation the threads contracted and were cut by the knife-edge. In this manner carbons of the same length were obtained. Benzole, or similar vapour, was used for carbonising the filaments, whilst the carbons were made white-hot by means of electric current. The ends of the filaments were connected with a short piece of wire (short-circuited), and again a current passed through them. The lamp was constructed in different sizes and, for example, for an intensity of 87 candles, 66 volts and 0.673 ampere were required. |
Date | |
Source | Fig. 444 at page 465 in Electricity in the service of man by Alfred Ritter von Urbanitzky, edited, with copious additions by Richard Wormell. Published by Cassell & Company (1886) |
Author | Unknown illustrator |
Licensing
[edit]Public domainPublic domainfalsefalse |
This work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 100 years or fewer. You must also include a United States public domain tag to indicate why this work is in the public domain in the United States. | |
This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights. |
https://creativecommons.org/publicdomain/mark/1.0/PDMCreative Commons Public Domain Mark 1.0falsefalse
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 12:20, 16 June 2012 | 798 × 830 (195 KB) | Danmichaelo (talk | contribs) | {{Information |description={{en |1=Two wires ''e'' ''e'', which are connected with the mercury tubes ''f'', are attached to the metal springs ''c'', which are the carbon holders. These springs are regulated by the slide ''d'' consisting of insulating... |
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Orientation | Normal |
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Horizontal resolution | 240 dpi |
Vertical resolution | 240 dpi |
Software used | Adobe Photoshop Elements 6.0 Windows |
File change date and time | 18:08, 24 March 2010 |
Color space | Uncalibrated |