Saturday, September 18, 2010

SOME PHYSICAL CONSTANTS:


Constant
Symbol
Value
Units
1
Speed of light in vacuum 
(c) 
299792458
m s-1
2
Permeability of vacuum 
(mu_0) 
1.25663706143592e-06
N A-2
3
Permittivity of vacuum 
(epsilon_0) 
8.854187817e-12
F m-1
4
Newtonian constant of gravitation 
(G) 
6.6725985e-11 ± 8.54093e-15
m3 kg-1 s-2
5
Planck constant 
(h) 
6.62607554e-34 ± 3.97565e-40
J s
6
Planck constant in eV 

4.135669212e-15 ± 1.2407e-21
eV s
7
h-bar 
(h-bar) 
1.0545726663e-34 ± 6.32744e-41
J s
8
h-bar in eV 

6.58212202e-16 ± 1.97464e-22
eV s
9
Planck mass 
(m_p) 
2.1767114e-08 ± 1.3931e-12
kg
10
Planck length 
(l_p) 
1.616051e-35 ± 1.03427e-39
m
11
Planck time 
(t_p) 
5.3905634e-44 ± 3.44996e-48
s
12
Elementary charge 
(e) 
1.6021773349e-19 ± 4.80653e-26
C
13
Magnetic flux quantum 
(Phi_0) 
2.0678346161e-15 ± 6.2035e-22
Wb
14
Josephson frequency-voltage quotient 

483597671400000 ± 1.45079e+08
V-1 s-1
15
Quantized Hall conductance 

3.8740461417e-05 ± 1.74332e-12
Omega-1
16
Quantized Hall resistance 
(R_H) 
25812.805612 ± 0.00116158
Omega
17
Bohr magneton 
(mu_B) 
9.274015431e-24 ± 3.15317e-30
J T-1
18
Bohr magneton in eV 

5.7883826352e-05 ± 5.15166e-12
eV T-1
19
Bohr magneton in Hz 

13996241842 ± 4198.87
T-1 s-1
20
Bohr magneton in wavenumbers 

46.68643714 ± 1.40059e-05
m-1 T-1
21
Bohr magneton in kelvins 

0.671709957 ± 5.70953e-06
K T-1
22
Nuclear magneton 
(mu_N) 
5.050786617e-27 ± 1.71727e-33
J T-1
23
Nuclear magneton in eV 

3.1524516628e-08 ± 2.80568e-15
eV T-1
24
Nuclear magneton in Hz 

7622591.423 ± 2.28678
T-1 s-1
25
Nuclear magneton in wavenumbers 

0.025426228177 ± 7.62787e-09
m-1 T-1
26
Nuclear magneton in kelvins 

0.000365824631 ± 3.10951e-09
K T-1
27
Fine structure constant 
(alpha) 
0.0072973530833 ± 3.28381e-10

28
Inverse fine structure constant 

137.035989561 ± 6.16662e-06

29
Rydberg constant 
(Ry) 
10973731.53413 ± 0.0131685
m-1
30
Rydberg constant in Hz 

3.289841949939e+15 ± 3.94781e+06
s-1
31
Rydberg constant in joules 

2.179874113e-18 ± 1.30792e-24
J
32
Rydberg constant in eV 

13.60569814 ± 4.08171e-06
eV
33
Bohr radius 
(a_0) 
5.2917724924e-11 ± 2.3813e-18
m
34
Hartree energy 
(E_h) 
4.359748226e-18 ± 2.61585e-24
J
35
Hartree energy in eV 

27.211396181 ± 8.16342e-06
eV
36
Quantum of circulation 

0.00036369480733 ± 3.23688e-11
m2 s-1
37
Electron mass 
(m_e) 
9.109389754e-31 ± 5.37454e-37
kg
38
Electron mass in u 

0.00054857990313 ± 1.26173e-11
u
39
Electron mass in eV 

510999.0615 ± 0.1533
eV
40
Electron-muon mass ratio 

0.0048363321871 ± 7.2545e-10

41
Electron-proton mass ratio 

0.00054461701311 ± 1.08923e-11

42
Electron-deuteron mass ratio 

0.0002724437076 ± 5.44887e-12

43
Electron-alpha-particle mass ratio 

0.0001370933543 ± 2.87896e-12

44
Electron specific charge 

-175881962530 ± -52764.6
C kg-1
45
Electron molar mass 

5.4857990313e-07 ± 1.26173e-14
kg mol-1
46
Electron Compton wavelength 
(lambda_C) 
2.4263105822e-12 ± 2.15942e-19
m
47
Electron Compton wavelength over 2 pi 
(lambda-bar_C)
3.8615932335e-13 ± 3.43682e-20
m
48
Electron classical radius 
(r_e) 
2.8179409238e-15 ± 3.66332e-22
m
49
Electron Thomson cross section 
(sigma_e) 
6.652461618e-29 ± 1.79616e-35
m2
50
Electron magnetic moment 

9.284770131e-24 ± 3.15682e-30
J T-1
51
Electron magnetic moment in Bohr magnetons

1.0011596521931 ± 1.00116e-11

52
Electron magnetic moment in nuclear magnetons

1838.28200037 ± 3.67656e-05

53
Electron magnetic moment anomaly 
(a-e) 
0.0011596521931 ± 9.97301e-12

54
Electron g-factor 
(g_e) 
2.0023193043862 ± 2.00232e-11

55
Electron-muon magnetic moment ratio 

206.7669673 ± 3.1015e-05

56
Electron-proton magnetic moment ratio 

658.210688166 ± 6.58211e-06

57
Muon mass 

1.883532711e-28 ± 1.14895e-34
kg
58
Muon mass in u 

0.11342891317 ± 1.70143e-08
u
59
Muon mass in eV 

105658389.34 ± 33.8107
eV
60
Muon-electron mass ratio 

206.7682623 ± 3.10152e-05

61
Muon molar mass 

0.00011342891317 ± 1.70143e-11
kg mol-1
62
Muon magnetic moment 

4.490451415e-26 ± 1.48185e-32
J T-1
63
Muon magnetic moment in Bohr magnetons 

0.0048419709771 ± 7.26296e-10

64
Muon magnetic moment in nuclear magnetons

8.890598113 ± 1.33359e-06

65
Muon magnetic moment anomaly 
(a_mu) 
0.001165923084 ± 8.39465e-09

66
Muon g-factor 
(g_mu) 
2.00233184617 ± 1.68196e-08

67
Muon-proton magnetic moment ratio 

3.1833454747 ± 4.77502e-07

68
Proton mass 
(m_p) 
1.67262311e-27 ± 9.86848e-34
kg
69
Proton mass in u 

1.00727647012 ± 1.20873e-08
u
70
Proton mass in eV 

938272312.8 ± 281.482
eV
71
Proton-electron mass ratio 

1836.15270137 ± 3.67231e-05

72
Proton-muon mass ratio 

8.880244413 ± 1.33204e-06

73
Proton specific charge 

95788309.29 ± 28.7365
C kg-1
74
Proton molar mass 

0.00100727647012 ± 1.20873e-11
kg mol-1
75
Proton Compton wavelength 
(lambda_Cp) 
1.3214100212e-15 ± 1.17605e-22
m
76
Proton magnetic moment 

1.4106076147e-26 ± 4.79607e-33
J T-1
77
Proton magnetic moment in Bohr magnetons

0.00152103220215 ± 1.52103e-11

78
Proton magnetic moment in nuclear magnetons

2.79284738663 ± 6.42355e-08

79
Diamagnetic shielding correction for protons (H_2 O, spherical sample, 298.15 K)
(sigma_H2O) 
2.568915e-05

80
Shielded proton moment (H_2 O, spherical sample, 298.15 K)
(mu_p') 
1.4105713847e-26 ± 4.79594e-33
J T-1
81
Shielded proton moment in Bohr magnetons

0.00152099312917 ± 1.67309e-11

82
Shielded proton moment in nuclear magnetons

2.79277564264 ± 6.42338e-08

83
Proton gyromagnetic ratio 
(gamma_p) 
267522128.81 ± 80.2566
T-1 s-1
84

(gamma_p) 
42577469.13 ± 12.7732
T-1 s-1
85
Proton gyromagnetic ratio, uncorrected (H_2 O, spherical sample, 298.15 K)
(gamma_p') 
267515255.81 ± 80.2546
T-1 s-1
86

(gamma_p'/2pi)
42576375.13 ± 12.7729
T-1 s-1
87
Neutron mass 
(m_n) 
1.67492861e-27 ± 9.88208e-34
kg
88
Neutron mass in u 

1.00866490414 ± 1.41213e-08
u
89
Neutron mass in eV 

939565632.8 ± 281.87
eV
90
Neutron-electron mass ratio 

1838.6836624 ± 4.0451e-05

91
Neutron-proton mass ratio 

1.0013784049 ± 9.01241e-09

92
Neutron molar mass 

0.00100866490414 ± 1.41213e-11
kg mol-1
93
Neutron Compton wavelength 
(lamda_Cn) 
1.3195911012e-15 ± 1.17444e-22
m
94
Neutron magnetic moment 

9.66237074e-27 ± 3.96157e-33
J T-1
95
Neutron magnetic moment in Bohr magnetons

0.0010418756325 ± 2.5005e-10

96
Neutron magnetic moment in nuclear magnetons

1.9130427545 ± 4.5913e-07

97
Neutron-electron magnetic moment ratio 

0.0010406688225 ± 2.49761e-10

98
Neutron-proton magnetic moment ratio 

0.6849793416 ± 1.64395e-07

99
Deuteron mass 
(m_d) 
3.34358602e-27 ± 1.97272e-33
kg
100
Deuteron mass in u 

2.01355321424 ± 2.41626e-08
u
101
Deuteron mass in eV 

1875613395.7 ± 562.684
eV
102
Deuteron-electron mass ratio 

3670.48301475 ± 7.34097e-05

103
Deuteron-proton mass ratio 

1.9990074966 ± 5.99702e-09

104
Deuteron molar mass 

0.00201355321424 ± 2.41626e-11
kg mol-1
105
Deuteron magnetic moment 
(mu_d) 
4.330737515e-27 ± 1.47245e-33
J T-1
106
Deuteron magnetic moment in Bohr magnetons

0.000466975447991 ± 8.87253e-12

107
Deuteron magnetic moment in nuclear magnetons

0.85743823024 ± 2.40083e-08

108
Deuteron-electron magnetic moment ratio 

0.000466434546091 ± 8.86226e-12

109
Deuteron-proton magnetic moment ratio 

0.307012203551 ± 5.21921e-09

110
Avagadro constant 
(N_A) 
6.022136736e+23 ± 3.55306e+17
mol-1
111
Atomic mass constant 
(m_u) 
1.66054021e-27 ± 9.79719e-34
kg
112
Atomic mass constant in eV 

931494322.8 ± 279.448
eV
113
Faraday constant 
(F) 
96485.30929 ± 0.0289456
C mol-1
114
Molar Planck constant 

3.9903132336e-10 ± 3.55138e-17
J s mol-1
115

(N_A hc) 
0.1196265811 ± 1.06468e-08
J m mol-1
116
Molar gas constant 
(R) 
8.3145107 ± 6.98419e-05
J mol-1 K-1
117
Boltzmann constant 
(k) 
1.38065812e-23 ± 1.17356e-28
J K-1
118
Boltzmann constant in eV 

8.61738573e-05 ± 7.2386e-10
eV K-1
119
Boltzmann constant in Hz 

20836741800 ± 175029
K-1 s-1
120
Boltzmann constant in wavenumbers 

69.5038759 ± 0.000583833
m-1 K-1
121
Molar volume (ideal gas), STP 
(V_m) 
0.0224141019 ± 1.88278e-07
m3 mol-1
122
Loschmidt constant 
(n_0) 
2.68676323e+25 ± 2.28375e+20
m-3
123
Stefan-Boltzmann constant 
(sigma) 
5.6705119e-08 ± 1.92797e-12
W m-2 K-4
124
First radiation constant 
(c_1) 
3.741774922e-16 ± 2.24506e-22
W m2
125
Second radiation constant 
(c_2) 
0.0143876912 ± 1.20857e-07
m K
126
Wien displacement law constant 
(b) 
0.00289775624 ± 2.43412e-08
m K
127
Electron volt 
(eV) 
1.6021773349e-19 ± 4.80653e-26
J
128
Atomic mass unit 
(u) 
1.66054021e-27 ± 9.79719e-34
kg
129
Standard atmosphere 
(atm) 
101325
Pa
130
Standard acceleration of gravity 
(g_n) 
9.80665
m s-2
131
BIPM-maintained ohm, Omega_69-B1 as of 1 Jan 85
(Omega_B185)
1-1.56350e-6
Omega
132
Drift rate of Omega_69-B1 
(dOmega_69-B1/dt)
-0.056615
muOmega/yr
133
BIPM-maintained volt 483 694 GHz(h/2e) 
(V_76-B1) 
1-7.5930e-6
V
134
BIPM maintained ampere A_BIPM 
(A_B185) 
1-6.0330e-6
A
135
Cu x-unit: 
(xu(CuKalpha1))
1.002077897e-13 ± 7.01455e-20
m
136
Mo x-unit: 
(xu(MoKalpha1))
1.0020993845e-13 ± 4.50945e-20
m
137
AA *: 
(AAngstrom-star)
1.0000148192e-10 ± 9.20014e-17
m
138
Lattice spacing of Si (in vacuum, 295.65 K)
(a) 
5.431019611e-10 ± 1.14051e-16
m
139
Lattice spacing Si (220) plane 
(d_220) 
1.920155404e-10 ± 4.03233e-17
m
140
Molar volume of Si 
(V_m(Si)) 
1.2058817989e-05 ± 8.92353e-12
m3 mol-1


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