(1)
( ) . . ( ). (1) pc>0, , : pr>p0. . .
, pc<0 ( (1)). pr , : pr<p0. .
(Δp) , .
. (1805). , V , . . d r d G
dG = pcdV + σ d Ω (2)
pcdV , σdΩ ; Ω = 4πr² r.
: ΔG = 0;
4πr²pc + 8πrσ = 0.
r :
pc = (2σ)/r. (3)
, pr , p0 . .
, () .
pc = + (2σ)/r. (4)
. 10 . σ = 473,5 /². (4) , (r = 10 ) 947 , . , .
(3) (4) .
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pc = σ(1/r1 + 1/r2), (5)
r1, r2 .
r1 r2 = ∞, Pc = σ/r1, 2 , r.
0,5 (1/r1 + 1/r2) = H . , (5)
pc = 2σH.
. , r >> b (b ). , .
42., . , , , . , , , .
, , , (. 7.5). , , .
, , , , . , cos = 1, . cos = 1, .