Nearly two thousand years after Archytas. ... The pitch or frequency of a musical string varies inversely with the length, directly with the square root of the tension. ... The reciprocals of these numbers (aquot;12, a#39;/Ar, and lii) form an arithmetic progression: a#39;Al is (he arithmetic mean between a#39;A3 ... of the intermediate notes in the lowest four octaves, we obtain a sequence for which Pythagoras would have sacrificedanbsp;...

Title | : | The Rainbow book, being a collection of essays & illustrations devoted to rainbows in particular & spectral sequences in general, focusing on the meaning of color (physically & metaphysically) from ancient to modern times |

Author | : | F. Lanier Graham, Fine Arts Museums of San Francisco |

Publisher | : | Shambhala Publications - 1975-08-12 |

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