A PRACTICAL EXAMPLE AFTER GAVSS 

 stu-ed from A ; P'= principal point measured from B 



_?. , fcl I--.!- 



o ' ' 6 ~, r~ 9' 



/ \ 3 / 1 2\ 7 j , 1 2 1 1 



t*' Wlas-, / _ )= - ; d u u = v v _ 



2\ 2 3J 4' > 2 X 3 x ~2~ ~ 6' 



7 1 19 

 ft ( w / _ M ) - d ^6 M ' = - 4 + g= - 12 = 1-583 ; 



1 1 



du' 2 X ~2 3 



P=A + j. - c - -, - .= A 4- in 

 ^ 



=A + -158 ..... (i) 

 1 2 



vv 



du _ =B ,2 _ ?_K_ 4 

 ) rftttt' 19 ]{) 



12 



=B--21 . . (ii) 



3 



^_ _ P ,-2 __ P _ 18 



w )_^ fcw /- 19- 19 



~12 



= p_-947 ..... (iii) 

 3 



//__p/_ ^ _ p/ _ ^ _ P'.L 



,, ( M >-_ M ) _^ ^S>- 1 9 - * 19 



""12 



=F + -947 ..... (iv) 

 9 



Ze^is JVb. 2 : Z>ata. Radius C = b =r ; radius D = = /; 



o 



1 8 



foci, f",f"'] thickness *=-J-Q= d ; ^ = -= ; Q = principal point 



measured from C ; Q'= principal point measured from D. 



8 1 8 - 1 



= _ 8 ; ^ = ^1 = ^ = 



= _ 

 r 9 15 ? oc 



64 fi4 



u u > = 75 -o = 75=' 853 ; 



. (v) 



, 

 it) d u u' r 64 



75 



i 2 



