Produced by the IEC (International Electrotechnical Commission), the organization that prepares and publishes International Standards for all electrical, electronic and related technologies. Contains all the terms and definitions in the International Electrotechnical Vocabulary or IEV.
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Academic edition of Encyclopedia Britannica Online. Full text entries accompanied by video clips, images, audio, related websites, and more. Includes timelines, a world atlas, and Merriam-Webster dictionary and thesaurus.