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78. (a) Since
pp
p
p
xy
x
y
==
=
=
00
,
∆
∆
. Thus from Eq. 3820 both
∆
x
and
∆
y
are
infinite. It is therefore impossible to assign a
y
or
z
coordinate to the position of an
electron.
(b) Since it is independent of
y
and
z
the wave function
Ψ
(
x
) should describe a plane
wave that extends infinitely in both the
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This note was uploaded on 06/03/2011 for the course PHY 2049 taught by Professor Any during the Spring '08 term at University of Florida.
 Spring '08
 Any
 Physics

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