1.Snell's law,sin(45') = 1.41sin(x),x = 30.1'
2.光速 = 波长*频率,3*10^8 = 6*10^-7*f,f = 5*10^14(Hz),进入玻璃后频率不变.
3.速度变为 c/n = 3*10^8/1.41 = 2.12*10^8 (m/s)
1.Snell's law,sin(45') = 1.41sin(x),x = 30.1'
2.光速 = 波长*频率,3*10^8 = 6*10^-7*f,f = 5*10^14(Hz),进入玻璃后频率不变.
3.速度变为 c/n = 3*10^8/1.41 = 2.12*10^8 (m/s)