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1. . S, S 1 S 2, S. , S 1 S 2 .
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: . . . . - . . . dE=KA0dScos(ωt-kx+φ)/r . . E=∫(S)(k(φ)(A0cos(ωt-kx+φ)/r))dS. , .
. . : . . . λ/2. 1, 2, 3 . , . . 2- π. =1-2+3 : =1/2+(1/2-2+3/2)+(3/2-4+5/2)+ =1/2. : ΔSm=Sm-Sm-1, rm2=a2-(a-hm)2=(b-mλ/2)2-(b+hm)2, hm=(bmλ+m2λ2/4)/2(a+b). λ→0 hm=bmλ/2(a+b), S=2πRh, Sm=2πahm=πabmλ/(a+b), ΔS=πλab/(a+b). . . 1>2>3 n- : rm=√(abmλ/(a+b)). : hm, rm, Sm. .. . = .
- . =1/2 .. > >> 2 , 4. - . , . , . > , .
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