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Physical Constants
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What is Planck's constant? What about the permittivity, as if you know what that means anyway, of free space? What is the unit for that? And hopefully everyone knows Boltzmann's constant, right? If not, check out the useful constants below:
| Constant | Symbol | Value and Units |
|---|---|---|
| Speed of light | c | 2.99792458 x 108 m/s |
| Magnitude of charge of electron | e | 1.60217733 x 10-19 C |
| Gravitational constant | G | 6.67259 x 10 -11 N m2/kg2 |
| Planck's constant | h | 6.6260755 x 10-34 J s |
| Boltzmann constant | k | 1.380658 x 10-23 J/K |
| Avogadro's number | NA | 6.0221367 x 1023 mol-1 |
| Gas constant | R | 8.314510 J/mol K |
| Mass of electron | me | 9.1093897 x 10-31 |
| Mass of proton | mp | 1.6726231 x 10-27 kg |
| Mass of neutron | mn | 1.6749286 x 10-27 kg |
| Permeability of free space | m0 | 4p x 10-1 Wb/A m |
| Permittivity of free space | e0 | 8.854187817 x 10-12 C2/N m2 |
Clyde, Chetan, JimMelanie Krieger, Chhaya Taralekar