Insulator
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An insulator is a substance that does not conduct electricity very well.[1] Glass, porcelain, and plastics are examples of insulators.
An insulator also may refer to a material which does not conduct heat very well. This is a thermal insulator, such as hotpads for kitchen use, or home insulation to avoid heat loss during winter.
References
- ↑ Wile, Dr. Jay L. Exploring Creation With Physical Science. Apologia Educational Ministries, Inc. 1999, 2000