Photosensitive chemicalsgreenspun.com : LUSENET : B&W Photo: Alternative Process : One Thread
I am wondering if there is any type of chemical, when exposed to light, will transform from clear to black?
-- Ryan Semeniuk (firstname.lastname@example.org), June 01, 2001
There are iron salts that are light sensitive. These iron salts are the basis for both cyanotypes, and platinotypes. A web search on these two terms should provide you with more information.
-- Joe Lipka (JoeLipka@compuserve.com), June 04, 2001.
Sorry not an answer but a question. Im really curious as to what you plan to do with it?
-- stephie d (email@example.com), April 02, 2002.