E-24
• 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