4. 8.
: .
I.
. , ( ), , .
, E=E0cos(ωt-kr+φ), , , r1 r2 ∆ r = r2- r1.
, , (r)=2A0cos(k∆r/2) , .
, , ( ), .
. , . 10-8.
( , τ ≈ 3.) . , , . , .
, . , , . .
: , , , . .
II.
, S1 S2. ( 1.) , ∆r = r2-r1 . , ∆r = kλ, y .
∆r = (2k+1)λ/2, .
, S , , . , .
|
|
d<<L, , ∆rk = ykd/L. , : yk = kλL/d : yk = (2k+1)λL/d. : ∆y=λL/d. :
λ=∆y d/L. (1)
3.
5 4, 3, 2. 1. 0,25 . L (1) : L = L0-0,25, L0 .
. 1 η ℓ.
1
ℓ, | |||||||
η, *10-6 |
∆y ∆y , . ∆y = [∆y/m] η, m (.3).
III.
1. .
2. (m = 1), (m = 2, m = 3, m = 4). 2.
3. . 2 .
4. .
2
L, | m | ∆y, | ∆y, | λ, | λ, | ∆λ, | ζ, % | |
1. ?
2. ?
3. , ?
4. ?
5. ?
6. ?
7. ?
8. ?
9. ?
10. ?