That exposition, really similar to classic, mostly in the past century used, silver-halogenides photographics materials, during that only a latent picture appeared in crop.
Hiyo ufafanuzi, kweli Sawa na classic, hasa katika karne iliyopita kutumika, fedha-halogenides Photographics vifaa, Wakati Hiyo tu picha latent alionekana katika mazao.