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" When the solar rays are passed through a print and thrown upon prepared paper, the unshaded parts are slowly copied ; but the lights transmitted by the shaded parts are seldom so definite as to form a distinct resemblance of them, by producing different... "
System of Theoretical and Practical Chemistry ... - Page 161
by Friedrich Christian Accum - 1808
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The Civil Engineer and Architect's Journal, Volume 2

William Laxton - 1839 - 522 pages
...thin coating of line varnish ; but this has not destroyed their susceptibility of becoming coloured. When the solar rays are passed through a print, and...them by producing different intensities of colour. " The images formed by means of a citmera obseitra have been found too faint to produce in any moderate...
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The Mechanics' Magazine, Museum, Register, Journal, and Gazette, Volume 30

1839 - 520 pages
...thin coating of fine varnish ; but this has not destroyed their susceptibility of becoming coloured. When the solar rays are passed through a print, and...them by producing different intensities of colour. " The images formed by means of a comerct ofocura have been found too faint to produce, in any moderate...
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The Mechanic's Magazine, Museum, Register, Journal and Gazette, Volume 30

1839 - 504 pages
...their susceptibility of becoming coloured. 'When the solar rays are passed through a print, and tlirown upon prepared paper, the unshaded parts are slowly...them by producing different intensities of colour. " The images formed by means of a camera obscura hare been found too faint to produce, in any moderate...
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Iron: An Illustrated Weekly Journal for Iron and Steel ..., Volume 30

Perry Fairfax Nursey - 1839 - 508 pages
...thin coating of fine varnish ; but this has not destroyed their susceptibility of becoming coloured. When the solar rays are passed through a print, and...prepared paper, the unshaded parts are slowly copied j but the lights transmitted by the shaded parts are seldom so definite as to form a distinct resemblance...
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The Magazine of Science, and Schools of Art, Volume 1

1842 - 496 pages
...parts of the leather or paper, to cause them to become dark when exposed to the rays of the sun. " When the solar rays are passed through a print and...resemblance of them by producing different intensities of color. " With regard to the preparation of the solution, I have found the best proportions those of...
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Tom Wedgwood, the first photographer

Richard Buckley Litchfield - 1903 - 320 pages
...exposed to the rays of the sun. Besides the applications of this method of copying that has just been mentioned, there are many others. And it will be useful...them by producing different intensities of colour. The images formed by means of a camera obscura have been found too faint to produce, in any moderate...
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Philosophical Magazine

1839 - 1198 pages
...thin coating of fine varnish; but this has iiot destroyed their susceptibility of becoming coloured. When the solar rays are passed through a print and...resemblance of them by producing different intensities af colour. “ The images formed by means of a camera obscura have been found to be too faint to produce,...
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