Mercurial comma: Difference between revisions
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'''557122275/556583944''', or the '''mercurial comma''', has a value of 1.673649 [[cent]]s, and is the amount by which five justly tuned [[19/17]]s and two [[15/14]]s exceed an octave. As the ratio between these intervals is very close to phi, this is a strong harmonic entropy minimum adjacent to the [[golden meantone]] sequence, particularly well suited to stringed instruments that are normally tuned with slight octave stretches due to the inharmonicity of their partials. | '''557122275/556583944''', or the '''mercurial comma''', has a value of 1.673649 [[cent]]s, and is the amount by which five justly tuned [[19/17]]s and two [[15/14]]s exceed an octave. As the ratio between these intervals is very close to phi, this is a strong harmonic entropy minimum adjacent to the [[golden meantone]] sequence, particularly well suited to stringed instruments that are normally tuned with slight octave stretches due to the inharmonicity of their partials. | ||
== Etymology == | |||
It is named after the chemical element mercury due to its adjacency to gold, since mercury meantone is adjacent to golden meantone. | |||
It is unrelated to the [[Mercury|80th-octave temperament]] by the same name. | |||
[[Category:Meantone]] | [[Category:Meantone]] | ||
[[Category:Mercurial]] | [[Category:Mercurial]] | ||