4375/4374: Difference between revisions

m Tone
Improve intro, sort similar things together and avoid the suggestion that its basic equivalence is somehow a "consequence"/"derivation" from the S-expression.
 
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{{Wikipedia|Ragisma}}
{{Wikipedia|Ragisma}}


'''4375/4374''', the '''ragisma''', is an [[unnoticeable comma|unnoticeable]] [[7-limit]] [[comma]] which is the difference between a stack of two [[27/25|large limmas]] and [[7/6]], the difference between a stack of four [[10/9|classical whole tones (10/9)]] and [[32/21]], and the difference between a stack of four [[6/5|classical minor thirds (6/5)]] [[octave reduction|octave-reduced]] and [[28/27]]. It is the smallest 7-limit [[superparticular]] ratio. It is also equal to the difference between a [[kleisma]] (S25<sup>2</sup> × S26) and a [[marvel comma]] (S15 = S25 × S26 × S27), hence its expression as S25 / S27 which directly implies it can be expressed as (28/24 = [[7/6]])/([[27/25]])<sup>2</sup>.
'''4375/4374''', the '''ragisma''', is an [[unnoticeable comma|unnoticeable]] [[7-limit]] [[comma]] with a size of about 0.396 [[cent]]s. It is the smallest 7-limit [[superparticular]] ratio, being the amount by which a stack of two [[27/25|large limmas]] falls short of [[7/6]], (7/6)/(27/25)<sup>2</sup>, as is conveniently codified by its [[S-expression]] of S25/S27. It is also the difference between a stack of four [[10/9|classical whole tones (10/9)]] and [[32/21]], and the difference between a stack of four [[6/5|classical minor thirds (6/5)]] [[octave reduction|octave-reduced]] and [[28/27]]. In term of other commas, it is equal to the difference between a [[15625/15552|kleisma]] and a [[marvel comma]].  


== Temperaments ==
== Temperaments ==
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* [[List of superparticular intervals]]
* [[List of superparticular intervals]]


== Notes ==
== References ==


[[Category:Ragismic]]
[[Category:Ragismic]]
[[Category:Commas with unknown etymology]]
[[Category:Commas with unknown etymology]]
[[Category:Commas named after musical traditions]]
[[Category:Commas named after musical traditions]]