 | James Cutbush - 1813 - 344 pages
...silver, prepared by dissolving one part of the nitrate in 10 of water, and then exposed to the light, it gradually acquires colour, and passes through a succession of changes to black. The common beams passing through red glass, have very little effect upon it ; yellow and green are more efficacious... | |
 | William Henry - 1819 - 500 pages
...white leather, when stained with a solution of nitrate of silver, in the proportion of ten parts of water to one of the salt, undergoes no change in the...to black. The common sun-beams, passing through red glass.'have very little effect upon it; yellow and green are more efficacious; but blue and violet... | |
 | William Henry - 1823 - 752 pages
...white leather, when stained with a solution of nitrate of silver, in the proportion of ten parts • water to one of the salt, undergoes no change in the...colour, and passes through a succession of changes to binck. The common sun-beams, passing through red glass, have very little edict upon it; yellow and... | |
 | John Ayrton Paris - 1831 - 598 pages
...for instance, that red rays, or the common sunbeams passed through red glass, have very little action upon it; yellow and green are more efficacious ; but blue and violet produce the most decided and powerful effects. Davy observes that these facts were analogous to those which were long... | |
 | John Ayrton Paris - 1831 - 582 pages
...for instance, that red rays, or the common sunbeams passed through red glass, have very little action upon it ; yellow and green are more efficacious ; but blue and violet produce the most decided and powerful effects. Davy observes that these facts were analogous to those which were long... | |
 | John White Webster - 1839 - 592 pages
...white leather, when stained with a solution of nitrate of silver, in the proportion of ten parts of water to one of the salt, undergoes no change in the...common sun-beams, passing through red glass, have very lillle effect upon it ; yellow and green are more efficacious; but blue and violet produce the most... | |
 | 1842 - 496 pages
...it is found, that red rays, or the common sunbeams passed through red glass, have very little action upon it ; yellow and green are more efficacious ; but blue and violet light produce the most decided and powerful effects. " The consideration of these facts enables us... | |
 | Robert Kemp Philp - 1864 - 1126 pages
...it is found that red rays, or the common sunbeams, passed through red glass, have very little action upon it ; yellow and green are more efficacious ; but blue and •violet light produce the most decided and powerful effects. When the shadow of any figure is thrown upon the... | |
 | Encyclopaedia - 1851 - 276 pages
...it is found that red rays, or the common sunbeams, passed through red glass, have very little action upon it; yellow and green are more efficacious; but blue and violet light produce the most decided and powerful effects. " When the shadow of any figure is thrown upon... | |
 | Robert Hunt - 1852 - 324 pages
...it is found that red rays, or the common sunbeams, passed through red glass, have very little action upon it ; yellow and green are more efficacious ; but blue and violet light produce the most decided and powerful effects. " When the shadow of any figure is thrown upon... | |
| |
... are sufficient to produce the full effect, in the shade several hours are required, and light transmitted through different coloured glasses acts upon it with different degrees of intensity. Thus it is found that red rays, or the common sunbeams passed... 
