160 



HOMOGENEOUS BEAMS 



lO ^ ^ ^ ^ ^ ^ "^ ^ ^ CO tO iO 1C 1C ^ ^ T^ ^ ^ ls CD CD 



CDCOCOCOCOCOCOCOCOCO CDCOCOCDCDCOCDCOCOCO t^t^-t^* 



^ I-H (** CO 00 "^ O^ Tt< 00 <N 00 ^ *< t^- 00 Gi lO O CO i-H Q} 1C 0} 



lO 1C * * CO CO <N 03 i I rH CD CD CD >O O * -^ * CO CO 000000 



X 



CO CO 00 O5 O5 O O5 00 t^ O O5 * 00 r* CO "5 CO CO < 



C^ TJH CD 00 O 00 * CO 00 O 00 (N O Oi (N lO 00 i-t 



00 CO <* lO O CO CO CO t~ l> CO ^ 00 O5 O <-H (N CO CO ^* COt^OO 



CO iO I> d (N * CO 00 O 00 lO t> O M * CO 00 OJ^HCO 



Tj<Tt<COCO O ^ * CO M <N rH O O OS OOlNl-1 



00000000 00 00 00 00 00 00 00 00 00 t> OOO 



"ONOOlMcO^-OOOOt^CO 5Tf(NOOCOCOO3'-i'-i'-i C^OOCO 



CO OS 1-1 * CO 00 O IN * CO J> O 00 lO 00 O <N 10 f- O t>"-HCO 



(NCCCO 



C<l (N <N CO CO 00 Tj< * 1C iO <N N 00 00 ^ * O O ^5 CO N 00 CO 



WO 00 <-< ** CO GO O -H CO IN CO 00 00 CO t- 1-1 1C OS <N l^ * O 



t^ 00 O5 ^H C^ CO ^ CO I s * 00 00 O^ '"' C^J Tt^ lO t^- 00 Oi r* 00 O C^ 



X 





