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Definition of Photography - 3 dictionary results

pho⋅tog⋅ra⋅phy

[fuh-tog-ruh-fee]
–noun
1. the process or art of producing images of objects on sensitized surfaces by the chemical action of light or of other forms of radiant energy, as x-rays, gamma rays, or cosmic rays.
2. cinematography.

Origin:
1839; photo- + -graphy
pho·tog·ra·phy   (fə-tŏg'rə-fē)   
n.  
  1. The art or process of producing images of objects on photosensitive surfaces.
  2. The art, practice, or occupation of taking and printing photographs.
  3. A body of photographs.

Photography

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.

Note: 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.
Language Translation for : Photography
Spanish: fotografía,
German: die Fotografie,
Japanese: 写真術
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