Nature, Količina 104Sir Norman Lockyer Macmillan Journals Limited, 1919 |
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Zadetki 1–3 od 80
Stran 251
... plate sensi- tive enough for a photographic zoetrope , and the three - colour method of colour photography was not practical , because the plates available were insensitive to red and nearly insensitive to green . But the keys to the ...
... plate sensi- tive enough for a photographic zoetrope , and the three - colour method of colour photography was not practical , because the plates available were insensitive to red and nearly insensitive to green . But the keys to the ...
Stran 281
... plates taken before sunrise in July , the explanation appears to be a change of figure of the colostat mirror , due to the heat of the sun . These plates were compared with the July check plates by using a duplex micrometer . They show ...
... plates taken before sunrise in July , the explanation appears to be a change of figure of the colostat mirror , due to the heat of the sun . These plates were compared with the July check plates by using a duplex micrometer . They show ...
Stran 619
... plates . ( London : The Engines of the Human Body . By Prof. A. Keith . Pp . xii + 284 + ii plates . ( London : Williams and Norgate . ) 12s . 6d . net . A Synoptical List of the Accipitres . By H. Kirke Swann . Part iii . ( London : J ...
... plates . ( London : The Engines of the Human Body . By Prof. A. Keith . Pp . xii + 284 + ii plates . ( London : Williams and Norgate . ) 12s . 6d . net . A Synoptical List of the Accipitres . By H. Kirke Swann . Part iii . ( London : J ...
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