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| The Columbia Encyclopedia, Sixth Edition. 2001-07. |
| tuning fork |
| steel instrument in the shape of a U with a short handle. When struck it produces an almost pure tone, retaining its pitch over a long period of time; thus it is a valuable aid in tuning musical instruments. It was invented in 1711 by John Shore, who jokingly called it a pitchfork. |
| The Columbia Encyclopedia, Sixth Edition. Copyright © 2007 Columbia University Press. |
| CONTENTS · INDEX · GUIDE · BIBLIOGRAPHIC RECORD | ||||
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