Forge comma: Difference between revisions
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{{Infobox Interval | {{Infobox Interval | ||
| Ratio = 1640558367/1638400000 | |||
| Ratio = 1640558367/ | |||
| Name = forge comma | | Name = forge comma | ||
| Color name = | | Color name = LLz<sup>3</sup>g<sup>5</sup>2, lala-trizo-aquingu 2nd | ||
| | | Comma = yes | ||
}} | }} | ||
The '''forge comma''' is the [[7-limit]] [[unnoticeable comma]] '''1640558367/ | The '''forge comma''' is the [[7-limit]] [[unnoticeable comma]] '''1640558367/1638400000''', which measures roughly 2.28 [[cent]]s. It's notable as the amount by which a stack consisting of an [[octave]], a [[6561/4096]] Pythagorean augmented fifth, and a [[5/4]] major third, exceeds a stack of three [[100/63]] quasi-tempered minor sixths. It also is the interval separating the [[amity comma]] from the [[gamelisma]] and is the sum of the [[landscape comma]] and the [[schisma]]. This comma was first found as the 7-limit comma linking [[12edo]], [[34edo]] and [[159edo]]. The various 11-limit families that temper out this comma are named after various metal objects made in a forge, hence '''[[the Forge]]''' as the name of this collection of temperaments. | ||
[[Category: | [[Category:Commas named for their regular temperament properties]] | ||