Once the photographic process was introduced, many people worked to improve it and innovation came rapidly. one improvement by frederick scott archer was to put light-sensitive liquid on glass plates. a drawback of the process was that the plate had to be sensitized, the photograph made and the plate developed all before the mixture dried.

wet collodian process

Explanation:

According to my research on early photographic methods, I can say that based on the information provided within the question the term being mentioned is called the wet collodian process. This is a photographing technique invented in 1851 by Frederick Scott Archer, that requires the photographic material to be coated, sensitized, exposed and developed within the span of about fifteen minutes, necessitating a portable darkroom for use in the field.

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