 | 1891 - 346 pages
...gelatin plate, except for its grained texture, meets the needs of the astronomer at all points. It possesses extreme sensitiveness; it is always ready...any position ; it can be exposed for hours ; lastly, it does not need immediate development, and for this reason can be exposed again to the same object... | |
 | 1891 - 674 pages
...gelatine plate, except for its grained texture, meets the needs of the astronomer at all points. It possesses extreme sensitiveness ; it is always ready...any position : it can be exposed for hours ; lastly, it does not need immediate development, and for this reason can be exposed again to the same object... | |
 | 1892 - 790 pages
...gelatine plate, except for its grained texture, meets theneeds of the astronomer at all points. It possesses extreme sensitiveness; it is always ready...any position; it can be exposed for hours; lastly, it does not need immediate development, and for this reason can be exposed again to the same object... | |
 | British Association for the Advancement of Science - 1892 - 1258 pages
...gelatine plate, except for its grained texture, meets the needs of the astronomer at all points. It possesses extreme sensitiveness ; it is always ready...any position ; it can be exposed for hours ; lastly, it does not need immediate development, and for this reason can be exposed again to the same object... | |
 | British Association for the Advancement of Science - 1892 - 1146 pages
...gelatine plate, except for its grained texture, meets the needs of the astronomer at all points. It possesses extreme sensitiveness ; it is always ready...any position ; it can be exposed for hours ; lastly, it does not need immediate development, and for this reason can be exposed again to the same object... | |
 | Smithsonian Institution. Board of Regents - 1893 - 816 pages
...gelatine plate, except for its grained texture, meets theneeds of the a stronomer at all points. It possesses extreme sensitiveness; it is always ready...any position; it can be exposed for hours ; lastly, it does not need immediate development, and for this reason can be exposed again to the same object... | |
 | 1900 - 598 pages
...gelatine plate, except for its grained texture, meets the needs of the astronomer at all points. It possesses extreme sensitiveness; it is always ready...a,ny position; it can be exposed for hours; lastly, it does not need immediate development, and for this reason can be exposed again to the same object... | |
 | Smithsonian Institution. Board of Regents - 1911 - 846 pages
...observatory over the process of Daguerre, and even over that of wet collodion. The silverbromide gelatin plate, which I was the first, I believe, to use for...on succeeding nights; and so make up by successive installments, as the weather may permit, the total long exposure which may be needful. The power of... | |
 | Smithsonian Institution. Board of Regents - 1911 - 840 pages
...photographIng the spectra of stars, except for its grained texture, meets the need of the astronomer ut all points. This plate possesses extreme sensitiveness...on succeeding nights ; and so make up by successive installments, as the weather ru;iy permit, the total long exposure which may be needful. The power... | |
 | Smithsonian Institution. Board of Regents - 1911 - 848 pages
...observatory over the process of Daguerre, and even over that of wet collodion. The silverbromide gelatin plate, which I was the first, I believe, to use for...on succeeding nights; and so make up by successive installments, as the weather may permit, the total long exposure which may be needful. The power of... | |
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The modern silver-bromide gelatine plate, except for its grained texture, meets the needs of the astronomer at all points. It possesses extreme sensitiveness ; it is always ready for use ; it can be placed in any position ; it can be exposed for hours... 