Lovene for Lysets Forplantelse. 147 



(n fmr'd^^cpj^ (r') /sink'r' , „ coskV «sinkV\"|j 



n4-2 mrMr/(-^^^^)/ sink^r' , cosk^r' sink^rA I 

 u' L k^^ \ '^'^' "^ k'-r'- *\'-v'^j\ j 



(369) 3==(1-2£)S, 3,=(l-2sO??„ ,3=(l-2£),^, 3„=(1-2£')S,m 



n4.2 n4.2 ^ 



(370) ^ . ' l.a.3..,Cn+l)tn+3/J^ 



( n _m' dr"9'nfr") 



/ , ,^ ,. sink"r'\-|) 

 Acosk'V'-^^^)]j . 



( ."^.r . sinkV l+(— ir A— -n ^, ; \-i 



