File:Optic Projection fig 41.jpg
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| Description | caption: "Fig. 41. The Liliput Arc Lamp of Leitz. This lamp was designed to use with the Edinger drawing apparatus and with the condenser for dark ground illumination, etc. Both carbons are moved equally by means of the rack and pinion movement. For direct current the horizontal or positive carbon is larger than the vertical or negative carbon in the proportion of 8 to 6. The condensing lens in the tube is mounted in a telescoping sleeve. When the sleeve is in, the lens is at its principal focal distance from the crater, and gives a parallel beam of light. When the sleeve is pulled out more or less the condenser gives a converging beam of light." |
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| Source |
Optic Projection: Principles, Installation and Use of the Magic Lantern, Projection Microscope, Reflecting Lantern, Moving Picture Machine, by Simon Henry Gage and Henry Phelps Gage, Ph.D. Ithaca, New York, Comstock Publishing Company. 1914. page 79. |
| Author | Unknown author |
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PD-US |
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This media file is in the public domain in the United States. This applies to U.S. works where the copyright has expired, often because its first publication occurred prior to January 1, 1929, and if not then due to lack of notice or renewal. See this page for further explanation.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
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| current | 06:40, 9 February 2008 | | 1,761 × 1,425 (477 KB) | DavepapeBot (talk | contribs) | ==Summary== {{Information |Description=caption: "Fig. 41. The Liliput Arc Lamp of Leitz. This lamp was designed to use with the Edinger drawing apparatus and with the condenser for dark ground illumination, etc. Both carbons are moved equally by means o |
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