Question

Who discovered that iodized silver plates could produce direct positive images?

Answer 1

Answer:

Daguerre

Explanation:

After the death of Niepce in 1833, Daguerre continued to experiment with copper plates coated with silver iodide to produce direct positive pictures. Daguerre discovered that the latent image on an exposed plate could be brought out or "developed" with the fumes from warmed mercury.