| 1897 - 918 стор.
...of stars, except for its grained texture, meets the need of the astronomer at all points. This plate possesses extreme sensitiveness; it is always ready...any position; it can be exposed for hours; lastly, immediate development is not necessary, and for this reason, as I soon found to be necessary In this... | |
| 1891 - 346 стор.
...his wants. The modern silver-bromide gelatin plate, except for its grained texture, meets the needs of the astronomer at all points. It possesses extreme...on succeeding nights, so as to make up by several instalments, as the weather may permit, the total time of exposure which is deemed necessary. Without... | |
| 1891 - 680 стор.
...his wants. The modern silver-bromide gelatine plate, except for its grained texture, meets the needs of the astronomer at all points. It possesses extreme...on succeeding nights, so as to make up by several instalments, as the weather may permit, the total time of exposure which i.- deemed necessary. Without... | |
| 1892 - 790 стор.
...plate, Avent but a little way towards putting into the hands of the astronomer a photograhic surface adapted fully to his wants. The modern silver-bromide...necessary. Without the assistance of photography, however greatly the resources »f genius might overcome the optical and mechanical difficulties of constructing... | |
| British Association for the Advancement of Science - 1892 - 1258 стор.
...his wants. The modern silver-bromide gelatine plate, except for its grained texture, meets the needs of the astronomer at all points. It possesses extreme...on succeeding nights, so as to make up by several instalments, as the weather may permit, the total time of exposure which is deemed necessary. Without... | |
| British Association for the Advancement of Science - 1892 - 1146 стор.
...his wants. The modern silver-bromide gelatine plate, except for its grained texture, meets the needs of the astronomer at all points. It possesses extreme...on succeeding nights, so as to make up by several instalments, as the weather may permit, the total time of exposure which is deemed necessary. "Without... | |
| Smithsonian Institution. Board of Regents - 1893 - 816 стор.
...modern silver-bromide gelatine plate, except for its grained texture, meets theneeds of the a stronomer at all points. It possesses extreme sensitiveness;...necessary. Without the assistance of photography, however greatly the resources of genius might overcome the optical and mechanical difficulties of constructing... | |
| 1900 - 600 стор.
...of stars, except for its grained texture, meets the need of the astronomer at all points. This plate possesses extreme sensitiveness; it is always ready...any position; it can be exposed for hours; lastly, immediate development is not necessary, and for this reason, as I soon found to be necessary in this... | |
| Astronomical Society of the Pacific - 1909 - 614 стор.
...of stars, except for its grained texture, meets the need of the astronomer at all points. This plate possesses extreme sensitiveness; it is always ready...any position ; it can be exposed for hours; lastly, immediate development is not necessary, and for this reason, as I soon found to be necessary in this... | |
| Astronomical Society of the Pacific - 1910 - 316 стор.
...of stars, except for its grained texture, meets the need of the astronomer at all points. This plate possesses extreme sensitiveness ; it is always ready...any position ; it can be exposed for hours; lastly, immediate development is not necessary, and for this reason, as I soon found to be necessary in this... | |
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