أنشئ حسابًا أو سجّل الدخول للانضمام إلى مجتمعك المهني.
Daccording to the law of Descartes on refraction was n_1 \\ sin i_1 n_2 = \\ sin i_1 where n_1 , n_2 are the indices of media 1 and 2 and i_1 , i_2 are respectively the angles of incidence and refraction.
