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actinism

N ปฏิกิริยา ของ แสงอาทิตย์  pa-ti-ki-ri-ya-khong-saeng-a-tid

 

Webster's 1913 Dictionary

ACTINISM

Ac "tin *ism, n. Etym: [Gr.

 

Defn: The property of radiant energy (found chiefly in solar or electric light ) by which chemical changes are produced, as in photography.