Study on the emulsion and its physical properties

전자현미경(電子顯微鏡) 건판(乾板)의 제작(製作) 및 그 특성(特性) 조사(調査) 연구(硏究)

By the use of electron microscope, the study has beek made on the grain size in photo graphic emulsions, which are made at different temperature. It is found that ,the optimum temperature is $60^{\circ}C$, at which the average grain size obtained is the biggest. Also electron micrographs show NaCl-type crystal structure of AgBr and AgCl, as we expected.