十萬火急,拜託各路兄弟姊妹幫幫手譯英文,感激不盡!!!

Optical phenomenon: When light from refractive index bigger medium 1 (optically dense medium) incidence to refractive index smaller medium 2 (light sparse medium), after the process refraction light can deviate the normal. The light incidence angle is bigger, the projection light can deviate far. Until the incidence angle was equal to 臨界角 (), the light can along lie between the surface projection. If the light incidence angle is bigger than 臨界角, the light then can act according to the law of reflection, completely turns back medium 1. This kind of phenomenon is called the total internal reflection
p.s.(臨界角我find唔到sorry!!)

Optical phenomenon: When light from refractive index bigger medium 1 (optically dense medium) incidence to refractive index smaller medium 2 (light sparse medium), after the process refraction light can deviate the normal. The light incidence angle is bigger, the projection light can deviate far. Until the incidence angle was equal to critical angle (), the light can along lie between the surface projection. If the light incidence angle is bigger than critical angle, the light then can act according to the law of reflection, completely turns back medium 1. This kind of phenomenon is called the total internal reflection