Discovery of:. The Discovery of:The gum bichromate process cannot be credited to any one person. Many people had contributed to the discovery of this process and creating it into what it is today. Mongo Ponton was the first person to discover a part of the gum bichromate process. In 1838, he found out the light sensitivity of dichromate. He also found that when organic colloids mix with dichromate then they change from being soluble to insoluble. Ponton discovered that this chemical reaction 23
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