Science, Том 14John Michels (Journalist) American Association for the Advancement of Science, 1889 |
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Стр. 11
... photographic plate to cover an area several times as great as that which is covered by an instrument of the usual form . The time required to photograph the entire sky is reduced in the same proportion . A telescope of the proposed form ...
... photographic plate to cover an area several times as great as that which is covered by an instrument of the usual form . The time required to photograph the entire sky is reduced in the same proportion . A telescope of the proposed form ...
Стр. 43
... photographic operations ; ( 8 ) universal agreement of photo- graphic formula ; ( 9 ) uniform adjustment of customs procedure with regard to substances sensitive to light ; and ( 10 ) protection of artistic copyright in photographic ...
... photographic operations ; ( 8 ) universal agreement of photo- graphic formula ; ( 9 ) uniform adjustment of customs procedure with regard to substances sensitive to light ; and ( 10 ) protection of artistic copyright in photographic ...
Стр. 221
... photographic charts of the heavens in a manner which is beyond praise . There is one other recent advance which has been made in sci- entific photography to which I may be permitted to allude ; viz . , that , from being merely a ...
... photographic charts of the heavens in a manner which is beyond praise . There is one other recent advance which has been made in sci- entific photography to which I may be permitted to allude ; viz . , that , from being merely a ...
Содержание
A WEEKLY NEWSPAPER OF ALL THE ARTS AND SCIENCES | 35 |
Subscriptions United States and Canada | 60 |
Communications will be welcomed from any quarter Rejected manuscripts will | 236 |
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