Photoglyphic engraving, a process of etching on copper, steel, or zinc, by means of the action of light
and certain chemicals, so that from the plate impressions may be taken. Sir D. Brewster.
(Pho`to*glyph"ic) a. [Photo- + Gr. to engrave.] Pertaining to the art of engraving by the
action of light. [Written also photoglyptic.]
(Pho*tog"ly*phy) n. Photoglyphic engraving. See under Photoglyphic.
(Pho`to*glyp"tic) a. Same as Photoglyphic.
(Pho"to*gram) n. [Photo- + -gram.] A photograph. [R.]
(Pho"to*graph) n. [Photo- + -graph.] A picture or likeness obtained by photography.
(Pho"to*graph), v. t. [imp. & p. p. Photographed ; p. pr. & vb. n. Photographing ] To
take a picture or likeness of by means of photography; as, to photograph a view; to photograph a group.
He makes his pen drawing on white paper, and they are afterwards photographed on wood.Hamerton.
Also used figuratively.
He is photographed on my mind.Lady D. Hardy.
(Pho"to*graph), v. i. To practice photography; to take photographs.
(Pho*tog"ra*pher) n. One who practices, or is skilled in, photography.
Photographic printing, the process of obtaining pictures, as on chemically prepared paper, from photographic
negatives, by exposure to light.
(Pho`to*graph"ic Pho`to*graph"ic*al) a. [Cf. F. photographique.] Of or pertaining to
photography; obtained by photography; used ib photography; as a photographic picture; a photographic
camera. Pho`to*graph"ic*al*ly, adv.
(Pho*tog"ra*phist) n. A photographer.
(Pho*tog"ra*phom"e*ter) n. [Photograph + -meter.] (Photog.) An instrument for
determining the sensibility of the plates employed in photographic processes to luminous rays.
(Pho*tog"ra*phy) n. [Photo- + -graphy: cf. F. photographie.]
1. The science which relates to the action of light on sensitive bodies in the production of pictures, the
fixation of images, and the like.
2. The art or process of producing pictures by this action of light.
The well-focused optical image is thrown on a surface of metal, glass, paper, or other suitable substance,
coated with collodion or gelatin, and sensitized with the chlorides, bromides, or iodides of silver, or other
salts sensitive to light. The exposed plate is then treated with reducing agents, as pyrogallic acid, ferrous
sulphate, etc., to develop the latent image. The image is then fixed by washing off the excess of unchanged
sensitive salt with sodium hyposulphite (thiosulphate) or other suitable reagents.
(Pho`to*grav"ure) n. [F.] A photoengraving; also, the process by which such a picture is
(Pho`to*he"li*o*graph) n. [Photo- + heliograph.] (Physics) A modified kind of telescope
adapted to taking photographs of the sun.
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