. . .

()

(R). U2. () : (), (), (U). (U) (R2) , U U. ( Uε = U - U), (I) (∆U). (U2) . , (U1) (Uε), (I) .

. - .

:

U1 U2 , , U. Uε, I I1. D UR , .. .

- R, , .. .


, 1965 ( ) , . , - . , 1933 .? FAQ .

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