latent image

"Then, you can develop that latent image into a real image by attaching another material, silver, afterwards. In this way implosion fabrication can create all sorts of structures, including gradients, unconnected structures, and multimaterial patterns,"

"It's a bit like film photography -- a latent image is formed by exposing a sensitive material in a gel to light," said Daniel Oran, an MIT graduate student, and one of the paper's lead authors, in a statement.

You hold the developer of that and flow it across the plate, move it around until you’re seeing the latent image .

The Daguerreotype was a latent image produced by light on an iodised silver plate, and developed, or made visible, by the fumes of mercury; but the resultant picture was one of the most shimmering and vapoury imaginable, wanting in solidity, colour, and firmness.

I did not realize the master fact that the latent image which had been developed was the basis of photographic manipulation.