Graviton: Difference between revisions

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The graviton is the comma 129140163/128000000 = |-13 17 -6>. It is equal to (81/80)^4/(25/24), (81/80)^2/(20000/19683), (81/80)/(1600000/1594323), (32805/32768)*(78732/78125) and the parakleisma times the semicomma. Patent vals which temper it out include those for [[7edo|7]], [[58edo|58]], [[65edo|65]], [[72edo|72]], [[130edo|130]], [[137edo|137]], [[202edo|202]] and [[346edo|346]].
{{Infobox Interval
| Ratio = 129140163/128000000
| Name = graviton
| Color name = LLg<sup>6</sup>1, lala-tribigu 1sn,<br>Lala-tribigu comma
| Comma = yes
}}
The '''graviton''' ({{monzo|legend=1| -13 17 -6 }}, [[ratio]]: 129140163/128000000) is a [[small comma|small]] [[5-limit]] [[comma]] of about 15.4 [[cent]]s. It belongs to the [[syntonic–chromatic equivalence continuum]] and is equal to the difference between a stack of six [[syntonic comma]]s and an [[apotome]] ((81/80)<sup>6</sup>/(2187/2048)), or in terms of classic chromatic semitone, between a stack of four syntonic commas and a classic chromatic semitone ((81/80)<sup>4</sup>/(25/24)). It is also the [[schisma]] times the [[sensipent comma]] and the [[parakleisma]] times the [[semicomma]].
 
== Temperaments ==
[[Tempering out]] this comma leads to the [[gravity family]] of temperaments. [[Patent val]]s which temper it out include those for {{EDOs| 7, 58, 65, 72, 130, 137, 202 and 346 }}.
 
== Etymology ==
The comma was named by [[Mike Battaglia]] in 2011 in terms of the corresponding temperament, ''gravity'', after its grave-fifth generator<ref>[https://yahootuninggroupsultimatebackup.github.io/tuning/topicId_99315.html Yahoo! Tuning Group| ''Some new 5-limit microtemperaments'']</ref><ref>[https://yahootuninggroupsultimatebackup.github.io/tuning/topicId_99763.html#99794 Yahoo! Tuning Group| ''Names for forgotten or unclassified temperaments'']</ref>.
 
== References ==
 
[[Category:Gravity]]
[[Category:Commas named for their regular temperament properties]]