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1000 separator
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Copyright © 2008 by Eni Generalić
History
Physical constants
Absolute zero
–273.15 °C
Acceleration of free fall
9.80665 m s
–2
Atomic mass unit
1.6605402 × 10
–27
kg
Avogadro constant
6.0221367 × 10
23
mol
–1
Base of natural logarithms
2.718281828
Boltzmann constant
1.380658 × 10
–23
J K
–1
Classical electron radius
2.81794092 × 10
–15
m
Electron mass
9.1093897 × 10
–31
kg
Electron-proton mass ratio
5.44617013 × 10
–4
Electronvolt
1.6021892 × 10
–19
J
Elementary charge
1.60217733 × 10
–19
C
Faraday constant
96485.309 C mol
–1
First radiation constant
3.7417749 × 10
–16
W m
2
Gravitational constant
6.67259 × 10
–11
m
3
kg
–1
s
–2
Molar gas constant
8.314510 J mol
–1
K
–1
Molar volume
(Ideal gas, 273.15 K, 100 kPa)
22.71098 × 10
–3
m
3
mol
–1
pi, π
3.1415926535897932
Planck constant
6.6260755 × 10
–34
J s
Second radiation constant
1.438769 × 10
–2
m K
Solar constant
1361 W m
–2
Speed of light in vacuum
299792458 m s
–1
Speed of sound in air at STP
340 m s
–1
Standard pressure
100 kPa
Vacuum permeability
1.2566370614 × 10
–6
N A
–2
Vacuum permittivity
8.854187817 × 10
–12
F m
–1