import math

m1 = 0.2 volume1 = m1/7.13 oneSideVolume1 = volume1/2 thickness1 = oneSideVolume1/(3.3*3.2) layers1 = thickness1/(2.7E-8) print(layers1) print(round(layers1,-3))

m2 = 0.19 volume2 = m2/7.13 oneSideVolume2 = volume2/2 thickness2 = oneSideVolume2/(3.3*3.1) print(thickness2/(2.7E-8)) print(round(thickness2/(2.7E-8),-3))

wavelength = 589E-9 2.998E8/wavelength