B:2.50L 



K'-1.2 



DIRECTION OF , 

 1 INCIDENT WAVE 



K:|.0 



K =0.8 



K':0.6 



( Johnson, 1952 ) 



Figure 2-49. Contours of equal diffraction coefficient gap 

 width = 2.50 wavelengths (B/L = 2.50). 



""1 

 GAP 

 B :2.95L 



DIRECTION OF ^ 

 INCIDENT WAVE 



K'=I.247 K'-.\.Z 



K-- 



Diffrocted Wove Height 



Incident Wove Height 



K':|.0 K':0.8 



Figure 2-50. Contours of equal diffraction coefficient gap 

 width = 2.95 wavelengths (B/L = 2.95). 



2-97 



