Luna comma: Difference between revisions
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{{Infobox Interval | {{Infobox Interval | ||
| Name = Luna comma, hemithirds comma | | Name = Luna comma, hemithirds comma | ||
| Color name = ssg<sup>15</sup>5, sasa-quintrigu 5th,<br>Sasa-quintrigu comma | |||
| Monzo = 38 -2 -15 | | Monzo = 38 -2 -15 | ||
| Comma = yes | | Comma = yes | ||
}} | }} | ||
The '''luna comma''' or '''hemithirds comma''' is an interval of about 1.384 cents. It has the monzo [38 -2 -15⟩ and the ratio ''' | The '''luna comma''' or '''hemithirds comma''' is an interval of about 1.384 cents. It has the monzo [38 -2 -15⟩ and the ratio '''274877906944 / 274658203125'''. It is the difference between a stack of fifteen [[5/4|classical major third]]s ([[octave reduction|reduced]] four octaves) and a stack of two [[perfect fourth]]s. | ||
It defines the [[luna family]] of temperaments. | It defines the [[luna family]] of temperaments. | ||
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{{todo|add etymology|expand}} | |||
[[Category:Commas with unknown etymology]] | |||