REFLECTIONS FROM CIRCULAR BENDS 



343 



Rim = Rmi ^ mmir-Kfn' - 1)-=^ 



Sim Smi, Sirr, ^ 4:a-^^m{m' - \r' 



where w = 2, 4, 6, • • • . Also, if now m = 1, 3, 5, • • • , 



Too ^ ^V4, t/oo = 0, TFoo = 1 + ^V12 

 r^o -^ 8^m-V-2, [7„o = 



Fa/we^ o/ /« , Js and Kg 



(Al-18) 



(Al-19) 



