What chemicals are used in photography?
Asked on: 14 Aug 2009
In film photography, the key compounds are those that are light sensitive and thus react when light hits them to form a recognisable image as a result.
The most important compounds historically were salts of silver. Generally these are silver halides - e.g. compounds with the likes of chlorine, iodine and so on, which are crucually photosensitive. They are in some sort of gelatin to form an emulsion, and the negatives that are created can be developed into positives.
By: knowitall
Replied at: 23 Aug 2009
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