Resources on the Web

All about Point Groups

Mathcad Files

Mathematica Files

You can also download for free your copy of the MathReader

NIST Databases:

Physical Constants

  • Fundamental Physical Constants
    Searchable Bibliography on the Constants
    International System of Units (SI)
    Guidelines for Evaluating and Expressing Measurement Uncertainty
  • Atomic Spectroscopic Data

  • Atomic Spectra Database [Version 2.0   [Version 1.2]
    Ground Levels and Ionization Energies for the Neutral Atoms Bibliographic Database on Atomic Transition Probabilities Atomic Spectral Line Broadening Bibliographic Database
  • Molecular Spectroscopic Data

  • Wavenumber Tables for Calibration of Infrared Spectrometers
  • Frequencies for Interstellar Molecular Microwave Transitions
  • Last updated on 01/08/10