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25.
(a) Using Eq. 3714, the angular separation is
θ
R
=
1
.
22
λ
d
=
(1
.
22)(550
×
10
−
9
m)
0
.
76 m
=8
.
8
×
10
−
7
rad
.
(b) Using the notation of Sample Problem 376 (which is in the textbook supplement), the distance
between the stars is
D
=
Lθ
R
=
(10 ly)(9
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This note was uploaded on 11/12/2011 for the course PHYS 2001 taught by Professor Sprunger during the Fall '08 term at LSU.
 Fall '08
 SPRUNGER
 Physics

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