Symbol | Description | Relative Uncertainty |

Vacuum speed of light | per definitionem [1] | |

Vacuum permeability constant | per definitionem [1] | |

Vacuum permittivity constant | per definitionem [1] | |

PLANCK's constant | [1] | |

BOLTZMANN's constant | [1] | |

LOSCHMIDT's number or AVOGADRO's constant | [1] | |

Elementary charge of an electron | [1] | |

Universal gas constant | [1] | |

STEFAN-BOLTZMANN's constant | [1] |

Stefan Holzer 2007-11-19