LATENT IMAGE & FILM PROCESSING
Channel: DENTISTRY ’N MORE
Date: 18/09/2020

A latent image is an invisible image produced by the exposure to light of a photosensitive material such as photographic film. When photographic film is developed, the area that was exposed darkens and forms a visible image. In the early days of photography, the nature of the invisible change in the silver halide crystals of the film's emulsion coating was unknown, so the image was said to be "latent" until the film was treated with photographic developer.

In more physical terms, a latent image is a small cluster of metallic silver atoms formed in or on a silver halide crystal due to reduction of interstitial silver ions by photoelectrons (a photolytic silver cluster). If intense exposure continues, such photolytic silver clusters grow to visible sizes. This is called printing out the image. On the other hand, the formation of a visible image by the action of photographic developer is called developing out the image

The latent image produced when a radiographic film is exposed to a beam of X-ray can be visualized and examined only after the film has been suitably processed in the dark room . ... It is then immersed in a tank of developer which completes the reduction of the exposed grains of silver halide, and makes the image visible

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Disclaimer-All the content of the video(Including tables,graphs,pictures, statistics and the discription about the topic taken from the reference textbooks available in the public domain(hard and softcopies).

#latentimage #xrayfilm #filmprocessing