| heliograph | Origin: Helio- + -graph 1. A picture taken by heliography; a photograph. 2. An instrument for taking photographs of the sun. 3. An apparatus for telegraphing by means of the sun's rays. See Heliotrope. Source: Websters Dictionary (01 Mar 1998) |
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| heliographic | Of or pertaining to heliography or a heliograph; made by heliography. Heliographic chart. See Chart. Source: Websters Dictionary (01 Mar 1998) |
| heliography | 1. The science which relates to the action of light on sensitive bodies in the production of pictures, the fixation of images, and the like. 2. The art or process of producing pictures by this action of light. The well-focused optical image is thrown on a surface of metal, glass, paper, or other suitable substance, coated with collodion or gelatin, and sensitized with the chlorides, bromides, or iodides of silver, or other salts sensitive to light. The exposed plate is then treated with reducing agents, as pyrogallic acid, ferrous sulphate, etc, to develop the latent image. The image is then fixed by washing off the excess of unchanged sensitive salt with sodium hyposulphite (thiosulphate) or other suitable reagents. Origin: Photo-: cf. F. Photographie. Source: Websters Dictionary (01 Mar 1998) |
| heliograph | an apparatus for sending telegraphic messages by using a mirror to turn the sun's rays off and on |
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| heliograph | signal with a heliograph |
제품명 |
판매사 |
보험코드 | 성분/함량 | 구분/보험급여 |
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제품명 |
판매사 |
보험코드 | 성분/함량 | 구분/보험급여 |
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