A parallel beam of light containing two wavelengths, λ1 = 455 nm and λ2 = 642nm, enters the silicate flint glass of an equilateral prism as shown in Fig.24-59. At what angles, θ1 and θ2 does each beam leave the prism (give angle with normal to the face)?
See Fig. 24-14.

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1.7 Silicate flint glass 1.6 Borate flint glass Quartz Silicate crown glass 1.5 Fused quartz 1.4f 400 500 600 700 Wavelength (nm) Violet Blue Green Yellow Orange Red Refractive index 60° 45.0° 60 60°