Chemical elements
  Nitrogen
    Isotopes
    Energy
    Nitrogen Cycle
    Production
    Application
    Physical Properties
      Compressibility
      PV and temperature
      Specific Heats
      Viscosity
      Refractivity
      Spectra
      Solubility
      Liquid Nitrogen
      Solid Nitrogen
      Active Nitrogen
      Formation of Nitrides
      Atomic Weight
      Disintegration
    Chemical Properties
    Ammonia
    Hydroxylamine
    Hydrazine
    Azoimide
    Nitric Acid

Refractivity of Nitrogen






The refractive index of nitrogen for sodium light is, according to Mascart, 1.0002973, and according to Ramsay and Travers, 1.0002971. These values refer to standard density. The constants in Cauchy's formula,

n-1=A(1+B/λ2)

are A =29.06 and B=7.7, where n and λ represent the refractive index and wave-length respectively.
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