写しゃ真しん乳にゅう剤ざい

noun

photographic emulsion

Technical term in photography; a light-sensitive coating on film or paper.

• 写しゃ真しん乳にゅう剤ざいは光ひかりに当あたると化か学がく反はん応のうを起おこす。

  Photographic emulsion undergoes a chemical reaction when exposed to light.