, . , , . . , . , , . . . , . . e (18421919), . . , - . . (18661912). . . (18791944) .
( ), (, ). , (). : 1) , , , ; 2) (, ) . s
(140.1)
, , w0 () , j t = 0, (w0t + j) t. . +1 - 1, s + - .
, , , , 2p, . .
(140.2)
, ,
(140.3)
. . , , . (140.2) (140.3),
(): 1 , 1 .
s:
(140.4) (140.5)
. . . (140.4) (140.5) w0 w20. (140.4) (140.1) p/2, (140.5) (140.1) p. , , s = 0, ds/dt ; s , d2s/dt2 (. 198).
|
|
(140.5)
(140.6)
( s = A cos (w0t + j)). (140.1).
. 198
, . , , j, , , (. 199).
. 199
w0, , - +, s = Acos(w0t + j). , , j, , w0 .
, . . ,
. (140.1) :
(140.8)
(140.8)
. Re (140.8)
, s , .