This is documentation for Mathematica 8, which was
based on an earlier version of the Wolfram Language.
 PHYSICAL CONSTANTS PACKAGE TUTORIAL | Functions »

Physical Constants Package

In addition to providing a comprehensive environment for calculations and a programming language, Mathematica is also a system for representing and presenting scientific and technical knowledge. Certain packages are included with Mathematica to provide easy access to commonly used scientific data, such as the value of physical constants and conversion factors for various systems of units.
 SpeedOfLight the speed of light is 299792458 Meter/Second AvogadroConstant Avogadro's constant is approximately 6.02214199×1023Mole^-1 ElectronMass the mass of an electron is approximately Kilogram FineStructureConstant the fine structure constant is approximately EarthMass the mass of the earth is approximately Kilogram AccelerationDueToGravity the acceleration due to gravity is 9.80665 Meter/Second2

Some common physical constants.