Mungo Ponton
Mungo Ponton FRS (20 November 1801 – 3 August 1880) wis a Scots inventor wha in 1839 creatit a method o permanent photografie based on potassium dichromate.
Mungo Ponton FRS (20 November 1801 – 3 August 1880) wis a Scots inventor wha in 1839 creatit a method o permanent photografie based on potassium dichromate.