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•Simply input the number that corresponds to the scientific
constant you want to look up and it appears instantly on
the display.
• See the Scientific Constant Table for a complete list of
available constants.
• Example: To determine how much total energy a person
weighing 65kg has (E = mc
2
=
5.841908662
×
10
18
)
65
L 28 K =
65
Co
2
5.841908662
18
28 is the “speed of light in vacuum” constant number.
u Scientific Constant Table
Based on ISO Standard (1992) data and CODATA recom-
mended values (1998).
To select this constant:
Input this scientific
constant number:
proton mass (mp) 01
neutron mass (mn) 02
electron mass (me) 03
muon mass (m
µ
)04
Bohr radius (a
0
)05
Planck constant (h) 06
nuclear magneton (
µ
N) 07
Bohr magneton (
µ
B) 08
Planck constant, rationalized ( )09
fine-structure constant (α)10
classical electron radius (re) 11
Compton wavelength (λ
c) 12
proton gyromagnetic ratio (γ
p) 13
proton Compton wavelength (λ
cp) 14
neutron Compton wavelength (λ
cn) 15
Rydberg constant (R∞)16
atomic mass unit (u) 17
proton magnetic moment (
µ
p) 18
electron magnetic moment (
µ
e) 19
neutron magnetic moment (
µ
n) 20
muon magnetic moment (
µ
µ
)21
Faraday constant (F) 22
elementary charge (e) 23
Avogadro constant (NA) 24
Boltzmann constant (k) 25