How is silver used in photography?
Silver nitrate , affected by light and darken depending on the intensity of light fallen on its solution, and it used in photography in a sensitive film to light fall on it through the lens of the camera , and the film must be treated in a dark room in a process to develop the pictures by using different solutions and lastly they fixed the pics by sodium thiosulphate, by the way silver nitrate solution is used as an old hair dye and the color depends on the concentration and the time of exposure to sunlight, but it is harmful to skin.
