. , . . . , . ( ), , . , , . , ( ), ‑2. .
. . XVIIIXIX . , . , , . . ΔR / R = k.
.
. , . , . , . . : e = k, k .
. , , : ΔR / R = Ke, K .
, ( , , ). , R, : dR / R = KxdE, dE , .
: E = C1 x InR + C2, C 1 2 .
2. ‑ , (R1). R = R1 R R 1 ,. . = 0. : 0 = C1 x InR + C2. 2 = C1 InR1, : E = C1 x InR1 = C1 x In(R / R1).
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: E = C1 x In(R / R1) .
, . R1 , , ; , .
. . . . , , : ΔE / E = k, . . . : (ΔE / E) = K(ΔR / R).
, : dE / E = dR / R, = k Rn . n , , , .
. . . : Emin = k x Rnmin x Emax = K x Rnmax.
: InEmin = n x InRmin + Ink, InEmax = n x InRmax + Ink.
n, : n = (InEmax InEmin) / (InRmax InRmin) n = In(Emax Emin) / In(Rmax Rmin)
, , n .
( ) ( ). , .
, .
. . . . , : ΔE / Ez, . . . : dEz/ E = dR / R.
, z = 0 , z = 1 . , . , , , . , ‑, , ‑, , . , z = 0, .
. , , . , . , , . z = 1, .
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, . , , , .
. , . . . , ( ) 1000 40 ( ). , ( ) . ( ) .
. , . , , , . , , . ? , , .