| AstroLAB's Interesting Tables | |||||||
| Physical Constants | |||||||
| Name | Symbol | Number | Exp | CGS Units | Relative Error | ||
| (ppm) | |||||||
| speed of light in a vacuum | c | 2.99792458 | 10 | cm s-1 | exact | ||
| Planck constant | h | 6.6260755(40) | -27 | erg s | 0.6 | ||
| hbar | 1.05457266(63) | -27 | erg s | 0.6 | |||
| Gravitational constant | G | 6.67259(85) | -8 | cm3 g-1 s-2 | 128 | ||
| Electron charge | e | 4.8032068(14) | -10 | esu | 0.3 | ||
| Mass of electron | me | 9.1093897(54) | -28 | g | 0.59 | ||
| Mass of proton | mp | 1.6726231(10) | -24 | g | 0.59 | ||
| Mass of neutron | mn | 1.6749286(10) | -24 | g | 0.59 | ||
| Mass of hydrogen | mH | 1.6733 | -24 | g | -- | ||
| Atomic mass unit | amu | 1.6605402(10) | -24 | g | 0.59 | ||
| Avagadro's number | NA | 6.0221367(36) | 23 | 0.59 | |||
| Boltzmann constant | k | 1.380658(12) | -16 | erg k-1 | 8.5 | ||
| Electron volt | eV | 1.6021772(50) | -12 | erg | ~0.60 | ||
| Radiation density constant | a | 7.5646 | -15 | erg cm-3 K-4 | -- | ||
| Stefan-Boltzmann constant | \sigma | 5.67051(19) | -5 | erg cm-2 K-4 s-1 | 34 | ||
| Fine structure constant | \alpha | 7.29735308(33) | -3 | 0.045 | |||
| Rydberg constant | R\inf | 2.1798741(13) | -11 | erg | 0.6 | ||