first undertone (the octave), or even the second (the twelfth), than when the actual note of the resonator was used. ... However this may be, there is no doubt that a little practice greatly exalts the power of observation, many persons on the first trial ... But the question arises, what is it that is estimated 1 Is it the natural note of the resonator 1 I have already given my ... by the same maker, differ greatly. t The black French tubing, about Ap inch in external diameter, is the pleasantcst to use.

Title | : | Memoirs on Mathematics and Mathematical Physics |

Author | : | |

Publisher | : | - |

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