Holdrian comma: Difference between revisions
Rewrite Mercator comma section to be about old vs new Mercator comma, explicitly state the diaschisma mentioned is different to the modern one |
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== Mercator's comma, Mercator’s old comma, and the Holdrian comma == | == Mercator's comma, Mercator’s old comma, and the Holdrian comma == | ||
'''Mercator's old comma''' is a name sometimes used for a closely related interval because of its association with Nicholas Mercator. | |||
Holder 1731 writes that [[Marin Mersenne]] had calculated 58<sup>1</sup>/<sub>4</sub>s in the octave; Mercator "working by the logarithms, finds out but 55, and a little more."<ref name=Holder-1731/> | Holder 1731 writes that [[Marin Mersenne]] had calculated 58<sup>1</sup>/<sub>4</sub>s in the octave; Mercator "working by the logarithms, finds out but 55, and a little more."<ref name=Holder-1731/> | ||