chemistry of photography
A detailed Summary of chemistry of photography
When someone says the word photography the first thing that most
people think of is pictures. People never think of what goes in to the
developing process. They do not think about all the chemicals that go into
developing the pictures. Many people just wonder why their picture came back
with nothing on it or why they look like a ghost. They do not even bother to
think about all the chemistry that goes on to develop the pictures. They think of
how much money they just wasted on a bunch of messed up pictures. If they
were to sit down and think about all the chemicals that went into making that
one picture they would view it differently. Photography is just another form of
In the year 1864 a chemist by the name of Joseph Wilson Swan
produces the first way to develop film. (Joseph). What was known as the auto
type process was created by using a gelatin film soaked in carbon or other
pigment granules. This process would then be photosensitized by using
potassium dichromate. Later in 1879, he produced the bromide printing paper
that we now use in standard photographic medium.
Since photography has been around for about 100 years the chemicals
used to make both motion pictures and

"AWP Research". AWP.Online.Internet.4/26/01
(Photographic) If used correctly the fixer is to dissolve the undeveloped silver
a developer with a strong accelerator you will get a quicker developing time and
"Joseph Wilson Swan". Hutchinson's Biography Database.
"AWP Research". AWP.Online.Internet.4/26/01
washing aids , the wetting agents , and all of the toners that are used to develop
the image. (Davis) Some fixers that are commonly used are Boric acid,
bath. (Davis) The most common stop bath is made of 28% acetic acid, which is
proper way. You should never flush or pour chemicals down the sink or toilet.
working in your dark room you also want to have and air change at least ten
a container to use you want it to also be heated other wise the emulsion will
Some common words found in the essay are:
Wilson Swan, Photographic Emulsion, Acetic Acid, Kodalk Developing, Potassium Ferricyanide, Wal-Greens K-Mart, , Photography Chemicals, York Atheneum, stop bath, silver halide, silver halide crystals, halide crystals, black white, joseph wilson, joseph wilson swan, Joseph Wilson, wilson swan, hutchinson's biography database, biography database, hutchinson's biography, database onlineinternet3/30/01 photography, aids wetting, swan hutchinson's, biography database onlineinternet3/30/01,
Approximate Word count = 2099
Approximate Pages = 8 (250 words per page double spaced)
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