background image
( )
( )
0
0
2
:
1
lim 2
mean squaredispla
t
t
al
cement d
l t
ms
t
D
d t
-
=
r
r
G555
H
r
r
55555
D=D
0
D=4
D
0
x
y
z
x
y
z
EINSTEIN'S RELATIONSHIP
FLUCTUATION THEOREM