| photogenic epilepsy | A form of reflex epilepsy precipitated by light. (05 Mar 2000) |
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| photogeny | See Photography. See: Photogen. Source: Websters Dictionary (01 Mar 1998) |
| photoglyphic | Pertaining to the art of engraving by the action of light. Alternative forms: photoglyptic] 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. Origin: Photo- + Gr. To engrave. Source: Websters Dictionary (01 Mar 1998) |
| photogram | A photograph. Origin: Photo- + -gram. Source: Websters Dictionary (01 Mar 1998) |
| photogrammetry | Making measurements by the use of stereoscopic photographs. (12 Dec 1998) |
| photograph | A picture or likeness obtained by photography. Origin: Photo- + -graph. 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) Origin: Photographed; Photographing. To practice photography; to take photographs. Source: Websters Dictionary (01 Mar 1998) |
| photographer | One who practices, or is skilled in, photography. Source: Websters Dictionary (01 Mar 1998) |
| photographic | Of or pertaining to photography; obtained by photography; used ib photography; as a photographic picture; a photographic camera. Photograph"ically, Photographic printing, the process of obtaining pictures, as on chemically prepared paper, from photographic negatives, by exposure to light. Origin: Cf. F. Photographique. Source: Websters Dictionary (01 Mar 1998) |
| photographical | Of or pertaining to photography; obtained by photography; used ib photography; as a photographic picture; a photographic camera. Photograph"ically, Photographic printing, the process of obtaining pictures, as on chemically prepared paper, from photographic negatives, by exposure to light. Origin: Cf. F. Photographique. Source: Websters Dictionary (01 Mar 1998) |
| photographist | A photographer. Source: Websters Dictionary (01 Mar 1998) |
| photographometer | <apparatus, photography> An instrument for determining the sensibility of the plates employed in photographic processes to luminous rays. (24 Mar 1998) |
| photography | 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. Origin: Photo-: cf. F. Photographie. Source: Websters Dictionary (01 Mar 1998) |
| photoheliograph | <physics> A modified kind of telescope adapted to taking photographs of the sun. Origin: Photo- + heliograph. Source: Websters Dictionary (01 Mar 1998) |
| photohemotachometer | An appliance for recording photographically the rapidity of the blood current. Origin: photo-+ G. Haima, blood, + tachos, speed, + metron, measure (05 Mar 2000) |
| photoheterotroph | An organism that depends on light for most of its energy and principally on organic compounds for its carbon. Compare: photoautotroph, photolithotroph, phototroph. Origin: photo-+ G. Heteros, other, + trophe, nourishment (05 Mar 2000) |
Synonyms : Invertebrate Photoreceptor, Photoreceptor, Invertebrate
Synonyms : Photoreceptor, Microbial, Microbial Photoreceptor, Microbial Photoreceptors
Synonyms : Vertebrate Photoreceptors, Cones and Rods, Photoreceptor, Vertebrate, Vertebrate Photoreceptor
Synonyms :
Synonyms : Chronic Actinic Dermatitis, Photosensitization, Actinic Dermatitides, Actinic Dermatitides, Chronic, Actinic Dermatitis, Actinic Dermatitis, Chronic, Actinic Reticuloid Syndromes, Chronic Actinic Dermatitides, Dermatitides, Actinic, Dermatitis, Chronic Actinic
| photogenic epilepsy |
reflex epilepsy induced by a flickering light
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| photometer |
measuring instrument for measuring the luminous intensity of a source by comparing it (visually or photoelectrically) with a standard source light meter: photographic equipment that measures the intensity of light
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| photometry |
measurement of the properties of light (especially luminous intensity)
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| photomicrograph |
a photograph taken with the help of a microscope
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| photon |
a quantum of electromagnetic radiation; an elementary particle that is its own antiparticle
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| photo | equipment used by a photographer |
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| photo | photographic material consisting of a base of celluloid covered with a photographic emulsion |
| photo | light-sensitive paper on which photograph can be printed |
| photo | light-sensitive paper on which photograph can be printed |
| photo | a flat sheet of metal or glass on which a photographic image can be recorded |
| photo | a printed picture produced from a photographic negative |
| photo | by photographic means |
| photo | the occupation of taking and printing photographs or making movies |
| photo | the act of taking and printing photographs |
| photo | the process of producing images of objects on photosensitive surfaces |
| photo | using photography to produce a plate for printing |
| photo | an intaglio print produced by gravure |