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1. One way to think of the units of
h
is that, because of the equation
E
=
hf
and the fact that
f
is
in cycles/second, then the “explicit” units for
h
should be J
·
s
/
cycle. Then, since 2
π
rad/cycle is a
conversion factor for cycles
→
radians, ¯
h
=
h/
2
π
can be thought of as the Planck constant expressed in
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Unformatted text preview: terms of radians instead of cycles. Using the precise values stated in Appendix B, ¯ h = h 2 π = 6 . 62606876 × 10 − 34 J · s 2 π = 1 . 05457 × 10 − 34 J · s = 1 . 05457 × 10 − 34 J · s 1 . 6021765 × 10 − 19 J / eV = 6 . 582 × 10 − 16 eV · s ....
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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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