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Constants
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Physics
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261
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270
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294
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27
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30
Astronomical
Electricity
ElectroMagnetism
Force
Gravitational
Optics
Physical-Chemical
Subatomic Particles
Universal
NAME
SYMBOL
VALUE
Refractive Index of Water
n
w
1.33
Rydberg Constant α
2
m
e
c/2h
R
∞
R
∞
c
R
∞
hc
10973731.568549(83) m
-1
3.289841960368(25) × 10
15
Hz
2.17987190(17) × 10
-18
J
Sackur-Tetrode Constant
S
0
/R
-1.1517048(44)
-1.1648678(44)
Second Radiation Constant hc/k
c
2
1.4387752(25) × 10
-2
m K
Shielded Proton Gyromagnetic Ratio 2µ
p
/ħ (H
2
O, sphere, 25°C)
γ'
p
γ'
p
/2π
2.67515341(11) × 10
8
s
-1
T
-1
42.5763888(18) MHz T
-1
Shielded Proton Magnetic Moment (H
2
O, sphere, 25°C)
µ'
p
µ'
p
/µ
B
µ'
p
/µ
N
1.410570399(59) × 10
-26
J T
-1
1.520993132(16) × 10
-3
2.792775597(31)
Solar Constant
1400 W m
-2
Spectral Radiance, First Radiation Constant for 2hc
2
c
1L
1.191042722(93) × 10
-16
W m
2
sr
-1
Stefan-Boltzmann Constant (π
2
/60)k
4
/ħ
3
c2
σ
5.670400(40) × 10
-8
W m
-2
K
-4
Sun's Energy Production
3.90 × 10
26
W
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