wet plate

1 definition found

wet plate - Collaborative International Dictionary of English v.0.48 :

  Wet plate \Wet plate\ (Photog.)
     A plate the film of which retains its sensitiveness only
     while wet. The film used in such plates is of collodion
     impregnated with bromides and iodides. Before exposure the
     plate is immersed in a solution of silver nitrate, and
     immediately after exposure it is developed and fixed.
     [Webster 1913 Suppl.]