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Photography

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.


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Hi, I am new here...

Hi everybody, I am interesting in erotic photography. Just want to know if I can speak to anyone here about this topic.

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by SergTunsen
Sun Aug 31, 2014 9:33 am
 
Forum: General Discussion
Topic: Hi, I am new here...
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Views: 54

Hi, I am new here...

Hi everybody, I am interesting in erotic photography. Just want to know if I can speak to anyone here about this topic.

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by SergTunsen
Fri Aug 29, 2014 7:26 pm
 
Forum: Molecular Biology
Topic: Hi, I am new here...
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Stomach bloating and weight gain

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Sun Sep 05, 2010 12:50 pm
 
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Re: microscope magnification

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by Ken Ramos
Sat Jun 28, 2008 5:49 pm
 
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... erosional markings and other irregularities of the rock surface. Often these were selectively highlighted with water or other substances during photography to encourage human shapes. However, without such selective highlighting their human resemblance is largely lost. Indeed, the entire shelf ...

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Fri Jan 18, 2008 12:50 am
 
Forum: Evolution
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