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alfa = 30*
sin 30 = 0,5
n2 = 1
n1 = 1
szukane:
sin beta = ?
Z prawa załamania
sin(a)/sin(b) = n2/n1
sin(b) = n1 * sin(a)/n2
sin(b) = 1 * 0,5/1,3
sin(b) = 0,3846