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C
HAPTER
1
1. The vectors
ˆˆˆ
++
x
y
z
and
−− +
x
y
z
are in the directions of two body diagonals of a
cube. If
θ
is the angle between them, their scalar product gives cos
θ
= –1/3, whence
.
1
cos
1/ 3
90
19 28'
109 28'
−
θ=
=
°+
°
=
°
2. The plane (100) is normal to the x axis. It intercepts the a' axis at
and the c' axis
at
; therefore the indices referred to the primitive axes are (101). Similarly, the plane
(001) will have indices (011) when referred to primitive axes.
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This note was uploaded on 02/20/2012 for the course EE 123B taught by Professor Dianahuffaker during the Winter '11 term at UCLA.
 Winter '11
 DianaHuffaker

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