Lateral displacement in a glass slab

Glass slab · t = 5.0 cmd = 0.97 cmYellow · i=30°r=19.5°Refraction through a rectangular glass slab
Ray A · Yellow · 580 nm
Angle of incidence i
30.0°
Angle of refraction r
19.51°
Refractive index μ
1.497
Thickness t
5.0 cm
Lateral displacement d
0.966 cm
Wavelength λ
580 nm