Nitric acid is used in emulsion manufacture, in toners, and in bleaches, it is highly corrosive.
Nodal plane is an imaginary line passing through the nodal point, perpendicular to the optical axis.
Schulze mixes chalk, nitric acid, and silver in a flask; notices darkening on side of flask exposed to sunlight. Accidental creation of the first photo-sensitive compound.
Deterioration artifacts are distinct between nitrate (noxious nitric acid gas; amber discoloration; soft, sticky, or powdery film) and acetate (acetic acid gas, red or blue discoloration, shrinkage, brittleness, presence of bubbles or crystals).
The precipitate produced by dissolving elemental (metallic) silver in nitric acid produces silver nitrate (AGNO3). Silver nitrate can undergo further reactions to produce halides which are even more photo-sensitive.
Silver nitrate
A chemical combination of silver and nitric acid. It is used in intensifiers, physical developers and photographic emulsions manufacture.
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nitrocellulose
a film forming material produced by the treatment of cotton or wood fibers with nitric acid, and widely used in lacquer type inks made for screen printing.
 See also: Acid, Film, Photograph, Application, Color
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