10 



DIRECTION OF ^ 

 INCIDENT WAVE 



GAP Vi OOb o 



10 



o 



20 



K =0.1 



GEOMETRIC SHADOW 



; Johnson, 1952 ) 



Figure 2-43. Contours of equal diffraction coefficient gap 

 width = 0.5 wavelength (B/L = 0.5). 



Diffracted "Aave Height 

 Incioent Wove Height 



d 







16 18 20 



( Johnson, 1952) 



Figure 2-44. 



Ctontours of equal diffraction coefficient gap 

 vd.dth = 1 wavelength (B/L = 1). 



2-94 



