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Encyclopedia Britannica



TUNING FORK

This article appears in Volume V27, Page 392 of the Encyclopedia Britannica.

Encyclopedia Britannica - Main :: TUM-VAN
TUNING FORK , a small bar of cast steel with tolerably defined edges, bent into a
fork
  with two prongs, with a handle of the same metal extending from the
bend
  of the
fork
  and serving as a
sound
 -
post
  to transmit the vibrations to any resonance board or
body
  convenient for reinforcing the
sound
 . The fork is set in vibration by striking one of the prongs against a hard substance, or pressing the prongs together if they are
light
  ones, or if heavy drawing a bow across. The tuning fork was invented by John Shore, royal
trumpeter
  in 1711, sergeant
trumpeter
  at the entry of George I. in 1714, and lutanist to the
Chapel
  Royal in 1715. It is used for determining musical pitch (see PITCH), and also in certain
physical
  experiments (see SOUND).


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