Reference Material

• 1986 CODATA Recommended Values of the Fundamental Physical Constants
  This document, found on the NIST (National Institute of Standardization and Testing, USA) server gives the values of the basic constants and conversion factors of physics and chemistry resulting from the 1986 least-squares adjustment of the fundamental physical constants as published by the CODATA Task Group on Fundamental Constants and as recommended for international use by CODATA. There is also a paper describing how these data were established.
• Conversion of Units
  A forms-based "conversion calculator" where you may write a numerical value and a permissible unit into the free-form field. Alternatively, the unit may be selected from the selector box. Also includes a temperature conversion section.
• Fundamental Physical Constants
  A list maintained by Burkhard Kirste in Berlin.
• Marine Sediment and Rock Data
  NGDC's Marine Geology and Geophysics global marine sediment and hardrock databases aim at serving as the international focal point for marine geology data management. All data are in the international public domain, available globally to any interested individual or group. On-line searches of NGDC's data holdings and an index to seafloor samples (cores, grabs, dredges, and drill samples) available for futher study from other institutions are offered, along with direct download of many data files. Among the databases searchable on-line are the Marine Geology Data & Reports, The Index to Marine Geological Samples, Searches of Marine Geology Data & Inventories, Sediment Thickness of the World Oceans, Ocean Drilling Data , Marine Minerals Data On-Line & on CD-ROM. This is an invaluable site for marine chemists.
• NASA Thesaurus
  An electronic version of the NASA Thesaurus, covering a vast variety of technical terms - not only related to space.
• Table of Fundamental Physical Constants
  Yet another table of fundamental physical constants on the web, this one with confidence intervals.
• Table of the Nuclides
  A clickable chart presenting all known nuclides.
• Top 50 Chemicals
  Chemical production figures for the USA, showing the usage statistics for the top 50 industrial chemicals.
• Virtual Reference Desk
  At this location, you'll find pointers to lots of other reference information, e.g.:
  • Dictionaries, Thesaurus, Acronyms
  • Information Technology - Selected documents on planning for and using Information Technology.
  • Maps & Travel Information
  • Periodic Tables and Weights & Measures
  • Phone Books & Area Codes
  • Time & Date
  • ZIP & International Country Codes, and
  • Other Reference Sources

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