The Encyclopedia Americana: A Library of Universal Knowledge ...Encyclopedia Americana Corporation, 1924 |
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Zadetki 1–5 od 100
Stran
... original pictures with a plurality of lenses , as is now done with the ferrotype or tin type . Each exposure yielded a picture complete in itself , but only one , a positive ; whereas the altogether easier although apparently more ...
... original pictures with a plurality of lenses , as is now done with the ferrotype or tin type . Each exposure yielded a picture complete in itself , but only one , a positive ; whereas the altogether easier although apparently more ...
Stran 4
... modifications of the carbon printing process have come into pretty general use , especially among picto- rialists ; " gum - birchromate❞ and " ozotype . ” They are simpler than the original method , do not 4 PHOTOGRAPHY.
... modifications of the carbon printing process have come into pretty general use , especially among picto- rialists ; " gum - birchromate❞ and " ozotype . ” They are simpler than the original method , do not 4 PHOTOGRAPHY.
Stran 5
... original method , do not reverse the image , need no transfer and are supposed to give greater control . In the gum - bichromate process , paper is evenly coated with a suitable mixture of gum- arabic , coloring matter and potassium ...
... original method , do not reverse the image , need no transfer and are supposed to give greater control . In the gum - bichromate process , paper is evenly coated with a suitable mixture of gum- arabic , coloring matter and potassium ...
Stran 7
... original . The drawing should be made with perfectly black lines throughout , no matter how thin the lines are ; the scale of reduction should not be too great ; the best proportion is ob- tained when the drawings are made about one ...
... original . The drawing should be made with perfectly black lines throughout , no matter how thin the lines are ; the scale of reduction should not be too great ; the best proportion is ob- tained when the drawings are made about one ...
Stran 10
... original investigations were carried out give results far more consistent as to intensity of light than have been attained with any other form of standard in which a flame is used , and it is this complete and accurate reproducibility ...
... original investigations were carried out give results far more consistent as to intensity of light than have been attained with any other form of standard in which a flame is used , and it is this complete and accurate reproducibility ...
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