[填空题]
A parallel beam of light cosdsn gi -7.t h,cwhn:v92u. ,gfbmrx,ntaining tpv6u5t(xx 1v awo wavelengths, and , enters the silicate flint glass of an equilateral prism as shown in Fig. 24–58. At what angle does each beam leave the prism (give angle with normal to the face)?
from the normal
from the normal