Photographic notes and journal of the Manchester photographic society [afterw.] journal of the Photographic society of Scotland, and of the Manchester photographic society [afterw.] journal of the Photographic society of Scotland, and of the Birmingham photographic society [afterw.] journal of the Birmingham photographic society. Ed. by T. SuttonThomas Sutton 1858 |
Vanlige uttrykk og setninger
acetic acid actinic albumen alcohol ammonia aperture apparatus appears applied artist beautiful Calotype camera carbon carbon prints centre chemical chloride of silver Chrysotype Collodion Process colour combination copy cyanide dark developer dissolved Dry Collodion Editor of Photographic effect engraving ether exhibited experiments exposed exposure film focus focusing screen formula front lens gallic acid gelatine give glass grains gutta-percha hypo Improvements inches instrument iodide iodized John Herschel Journal last number lenses letter Messrs minutes negative Niepce nitrate bath nitrate of silver nitric acid object oblique pencil obtained optical optician ordinary Orthoscopic Lens ounce paper patent Photographic Notes Photographic Society picture plate portraits Positive Collodion potass potassium Pouncy Pouncy's present Pretsch produced Professor Petzval pyro-gallic pyroxyline rays readers remarks salt sensitive slide solution spherical aberration Stereomonoscope stereoscopic Street surface taken tartaric acid tint transparent tube uranium varnish Voigtlander washed
Populære avsnitt
Side 36 - White paper, or white leather, moistened with solution of nitrate of silver, undergoes no change when kept in a dark place, but, on being exposed to the daylight, it speedily changes colour, and after passing through different shades of grey and brown, becomes at length nearly black. The alterations of colour take place more speedily in proportion as the light is more intense. In the direct...
Side 18 - But nature makes that mean : so, over that art Which you say adds to nature, is an art That nature makes. You see, sweet maid, we marry A gentler scion to the wildest stock, And make conceive a bark of baser kind By bud of nobler race : this is an art Which does mend nature, change it rather, but The art itself is nature.
Side 66 - To the main objection of Dr. Young that all bodies would have the properties of solar phosphorus if light consisted in the undulations of ordinary matter, it may be answered that so many bodies have this property, and with so great variety in its duration, that non constat all may not have it, though for a time so short that the eye cannot detect its duration...
Side 227 - And God said, Let the earth bring forth grass, the herb yielding seed, and the fruit-tree yielding fruit after his kind, whose seed is in itself, upon the earth : and it was so.
Side 14 - It is so natural to associate the idea of labour with great complexity and elaborate detail of execution, that one is more struck at seeing the thousand florets of an Agrostis depicted with all its capillary branchlets (and so accurately, that none of all this multitude shall want its little bivalve calyx, requiring to be examined through a lens), than one is by the picture of the large and simple leaf of an oak or a chestnut. But in truth the difficulty is in both cases the same. The one of these...
Side 153 - ... surface. The photographic impression is produced upon this prepared surface by the action of light passing through a negative photographic picture, or an engraving, or other suitable object, or screen, or in the camera obscura, and it is then washed with a sponge and a large quantity of water. The albumen or other organic matter is rendered insoluble at the parts where it has been acted upon by the light, and the design is thus produced in the color which has been employed.
Side 66 - Passing now to the effects of Electricity, every day brings us fresh evidence of the molecular changes effected by this agent. The electric discharge alters the constitution of many gases across which it is passed ; and it was shown, that by passing it through an attenuated atmosphere of the vapours of phosphorus, this element is changed by the electric discharge into its allotropic variety, which is deposited in notable quantity on the sides of the receiver. In this experiment, the transverse bands...