Emulsions with different structures were made for other applications, such as direct positive emulsions, which has internal fog center built in to the emulsion, which is bleached by photoholes generated upon exposure.
Emulsions with different structures were made for other applications. This was such as direct positive emulsions. Direct positive emulsions has internal fog center. This internal fog center is built in to the emulsion. The emulsion is bleached by photoholes. These photoholes are generated upon exposure.