 | Richard Buckley Litchfield - 1903 - 320 Seiten
...permanent. The copy of a painting, or the profile, immediately after being taken, must be kept in some obscure place. It may indeed be examined in the shade,...case the exposure should be only for a few minutes ; by the light of candles and lamps, as commonly employed, it is not sensibly affected. No attempts... | |
 | Alexander Eugen Conrady - 1923 - 780 Seiten
...degree permanent ". Speaking of the photographic pictures which they obtained, they say: "... It may be examined in the shade, but, in this case, the exposure should be only for a few minutes ". Looking back upon the event now, it seems very strange that Wedgwood, and more particularly Humphry... | |
 | 1839 - 1198 Seiten
...idea before it was enlarged and corrected by experience. It was not until some time after, and when 1 was in possession of several novel and curious results,...that have been made to prevent the uncoloured parts from being acte(l upon by light, have as yet been successful. They have been covered with a thin coating... | |
 | 1851 - 412 Seiten
...water, or water and soap, and it is in a high degree permanent. The copy of a painting or the profile, immediately after being taken, must be kept in an...case the exposure should be only for a few minutes ; by the Light of candles or lamps, as commonly employed, it is not sensibly affected. No attempts... | |
 | 1881 - 768 Seiten
...or water and soap, and it is, in a high degree, permanent. The copy of the painting, or the profile immediately after being taken, must be kept in an...in the shade, but in this case the exposure should only be for a few minutes : by the light of candles, or lamps as commonly employed, it is not sensibly... | |
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The copy of a painting or the profile, immediately after being taken, must be kept in an obscure place ; it may, indeed, be examined in the shade> but in this case the exposure should be only for a few minutes ; by the Light of candles or lamps, as commonly... 
