Constants Topics: Values Energy Equivalents Searchable Bibliography Background Constants Bibliography Constants, Units & Uncertainty home page

Links to selected scientific data  Metric/SI   The SI, in-depth information on the modern metric system NIST  Atomic Spectroscopic data including atomic energy levels, wavelengths, transition probabilities NIST  Chemical NIST WebBook of thermochemistry, spectra, etc NIST See also      Values of the constants      Searchable bibliography on the constants      Background information related to the constants

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