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Databases

Dictionary of Physics [Full Text]

This dictionary contains over 3,700 clear and concise entries, covering all commonly encountered physics terms and concepts, including terms relating to astronomy, astrophysics, and physical chemistry.

Dictionary of Weights, Measures, and Units [Full Text]

This comprehensive dictionary provides clear definitions of all the units, prefixes, and styling of the Système International (SI), as well as industry-specific and traditional terms currently in use.