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Generally speaking, there are two main chemicals used in b&w film, and a couple of auxiallry chemicals. The primary chemicals are developer, which causes the silver iodide of the film or paper emulsion to darken if it has been exposed to light, and fixer, which removes the undeveloped silver iodide from the emulsion. A chemical used to completely stop the development process is called stop bath, and is used between the developer stage and the fixer stage in both b&w film & paper processing.
Other chemicals, like hypo clear is used to remove all traces of the fixing agent & rinsing agents to reduce stopping during the drying of film. These reagents (chemicals) are not used in enlargements or paper process.
Black & White developers vary in chemical composition and produce variations accordingly but are generally separated into subcatagories based upon grain quality . . fine grain developers reactions generally are slower.
When working with color, the developer is often split into two different chemicals, one which develops the primary (black and white) image, and another that develops the color layers. This is done via color couplers and as such is sequential in the developement chemistry,not as a b&w developer except in some applications of slide processing.
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What is a photo lab?
A photo lab is a dark room where photos are developed. It has many chemicals that develop the photos.
What paper is used in a dark room?
Light sensitive photographic paper.
What chemical reactant is the reason why things are stored in dark bottles?
Dark bottles are used for chemicals sensitive to UV or some visible light.
Why are tongs used in a dark room?
Tongs are used in a dark room so that the liquid will not spill or get on your clothes. Another reason tongs are used is so that the pictures are easy to handle and won't get messed up during development.
Sentence with hazardous?
Hazardous is easily used in a sentence. The chemicals spilled were hazardous to the people in the room.
Why cant you see when you move from a light room to a dark room?
Your pupil's have to adjust from the light to the dark so your pupils will get bigger in a dark room.
Will your room look dark if you have a dark wall?
It depends on however big the room is
How do you use dark in a sentence?
The room was dark.
Why no reaction happen when methane left in darkness?
If you just have methane in a dark room nothing will happen because nothing is there to react. If the room was light nothing would happen either, as there are still no other chemicals for it to react with.
When was Dark Room - album - created?
Dark Room - album - was created in 1980-06.
Why can't we see objects in the dark?
Our eyes are not able to see anything in a dark room because in a dark room everything is seemed to be black. So as a result we can see nothing in the dark room
What happens to your pupil when you go from a dark room to a light room?
pupil becomes short when we go from dark to light room
