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The Constants Menu

Constants → Mathematics

Display Pi, Euler Number or Golden Ratio.

Constants → Electromagnetism

Display Light Speed, Elementary Charge, Impedance of Vacuum, Permeability of Vacuum or Permittivity of Vacuum.

Constants → Atomic & Nuclear

Display Planck's Constant, Elementary Charge or Fine-Structure Constant.

Constants → Thermodynamics

Display Boltzmann Constant, Atomic Mass Unit, Molar Gas Constant, Stefan-Boltzmann Constant or Avogadro's Number.

Constants → Gravitation

Display Constant of Gravitation or Earth Acceleration.