1. ³ d ( = 0,5 ) 0,1 . ³ b 1 . L .
:
d = 0,1
= 0,5
b = 1 c
L -?
8
. S1S2C 1 (.8).
P k S2k S1k,
.
:
k 0 - k - .
(k+1)-
.
ϳ
.
³: L = 2 .
2. (n = 1,33), , . d = 0,55 ?
:
n = 1,33
l = 0,55
____________
dmin ?
|
. .9 , 1 2, .
,
;
r2 = 2dn .
.
:
.
d = (2k+1) .
k = 0, d = dmin
ϳ
.
³: dmin = 0,1
3. ij di i dk 4,0 4,8 . , , . ʳ (l = 500 ). - , .
di = 4,0
dk = 4,8
l = 500
k = i+3
___________
R ?
|
. - R k- :
R2 = (R-dk)2 + rk2 R2 = R2 - 2Rdk + dk2 + rk2.
dk2, :
rk2 = 2R dk. (1)
- :
ri2 = 2R di. (2)
г , , , , :
2dk + = kl.
|
|
dk = (2k - 1) . (3)
-
d = (2 1) . (4)
ϳ (3) (4) (1) (2)
rk2 = (2k 1) .
ri2 = (2i 1) . (5)
, k = + 3,
rk2 = (2 +5) . (6)
³ (6) (5)
rk2 - ri2 = 3 Rl.
.
ϳ
R = .
³: R = 1,17 .
4. a = . (n = 1,47). l = 500 . . N 1 ?
:
a =
n = 1,47
l = 500
b = 1
___________
N ?
|
. k- (k + N) - (.11) :
D1 = 2dkn - ; D2 = 2dk+N n - .
D1 = (2k +1) ; D2 = [2(k +N) +1] .
(2k +1) = 2dk n - dk = ;
= 2dk+N n - dk+N = ;
,
tg a = ,
Dd = dk+N dk = .
tg a = .
.
tg a = a.
.
ϳ
= 8,55 1/.
³: N = 8,55 1/.
5. , c m = 100 . 546 .
:
l = 456
___________
L ?
|
. (.12).
, :
.
ϳ
.
³: L = 27,3 × 10-6 .
ֲ ²
1. :
)
;
)
,
k (k = 1, 2, 3,...);
l ;
a ;
b .
2.
,
b ;
j ;
k = 1, 2, 3,... .
3.
b sin j = k l.
4.
d sin j = k l,
d , (d = b + a).
5.
,
k (k = 1, 2, 3,...);
j .
6. :
,
dl , i ;
k (k = 1, 2, 3,...);
N .
7. ( -)
2d sin j = k l,
|
|
d ;
j ;
k (k = 1, 2, 3,...);
l .