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Line 1: − A substance that does not conduct electricity very well.<ref>Wile, Dr. Jay L. ''Exploring Creation With Physical Science''. Apologia Educational Ministries, Inc. 1999, 2000</ref>+
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An '''insulator''' is a substance that does not conduct [[electricity]] very well.<ref>Wile, Dr. Jay L. ''Exploring Creation With Physical Science''. Apologia Educational Ministries, Inc. 1999, 2000</ref> Glass, porcelain, and plastics are examples of insulators.
==References==
==References==