Reducing agent - chemical in a developing solution which converts exposed silver halides to black metallic silver.
Reflected light - light bounced off a subject, not falling on it.
Pyro
A reducing agent sometimes used in developing solutions.
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More Photographic Terms ...
-Metol is a reducing agent which is soft working, especially in the presence of a weak alkali.
-Metolquinone is a combination of metol and hydroquinone, used as a developing agent (MQ developer).
Amidol
Soluble reducing agent which works at low pH values
Analog to digital (A/D) converters
A device which converts an analog signal into a digital signal. Complex waveforms are converted into simple strings of numbers.
REDUCING AGENT-A chemical constituent of a photographic developer that changes the exposed silver halide to metallic silver.
Reducing AgentThe first of three major components in developers is the reducing, or developing agent. It is the primary ingredient, but is not very active chemically. Common reducers are hydroquinone, metol, and phenidone.
During the process, the peroxide acts as both an oxidizing agent and reducing agent causing the silver to oxidize and later reduce back to metallic silver.
This compound is a water soluble salt, and can be used as a reducing agent in aqueous solutions. It is used as such in some industrial dying processes, where an otherwise water-insoluble dye can be reduced into a water-soluble alkali metal salt.
solvent
a dissolving, thinning, or reducing agent.
solvent activated
an adhesive that requires the addition of a solvent to activate bonding properties.
These reducing agents give oxygen and nitrogen gases, respectively, as oxidation products, and it is hard to see how small amounts of these elements remaining in solution could cause desensitization.
 See also: Image, Photograph, Processing, Film, Emulsion
  
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