E-shaped comma: Difference between revisions

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The '''E-shaped comma''', is a [[17-limit]] [[unnoticeable comma]] of measuring 0.055 [[cent]]s, with frequency ratio 31213/31212. It is the amount by which a stack consisting of three [[7/6]]s, one [[26/17]] and one [[28/17]] exceeds two [[octave]]s. By tempering it out is defined the '''E-shaped temperament'''.
The '''E-shaped comma''' is a [[17-limit]] [[unnoticeable comma]] of measuring 0.055 [[cent]]s, with frequency ratio of 31213/31212. It is the amount by which a stack consisting of three [[7/6]]s, one [[26/17]] and one [[28/17]] exceeds two [[octave]]s. By tempering it out is defined the '''E-shaped temperament''', which splits [[13/12]] into two [[51/49]]'s.
 
== Commatic relations ==
In terms of commas, it is the difference between the following superparticular pairs:
 
* [[1225/1224]] and [[1275/1274]]
* [[2401/2400]] and [[2601/2600]]
* [[4914/4913]] and [[5832/5831]]
* [[28561/28560]] and [[336141/336140]]
 
It factors into the following superparticular pair:
 
* [[37180/37179]] and [[Scintillisma|194481/194480]]


== Etymology ==
== Etymology ==
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[[Category:E-shaped]]
[[Category:E-shaped]]
[[Category:Commas referencing a famous use of a number]]