250/243: Difference between revisions

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-'''250/243''' is known as the '''porcupine comma''' or '''maximal diesis'''. Measuring about 49{{cent}}, it is a [[medium comma]]. It is the amount by which two [[10/9|minor whole tones]] exceed a minor third, that is, (10/9)<sup>2</sup>/(6/5). Tempering it out leads to [[5-limit]] [[Porcupine family|porcupine temperament]].
+'''250/243''' is known as the '''porcupine comma,''' '''maximal diesis''' or the '''chromium quartertone'''.
+== Theory ==
+Measuring about 49{{cent}}, it is a [[medium comma]]. It is the amount by which two [[10/9|minor whole tones]] exceed a minor third, that is, (10/9)<sup>2</sup>/(6/5). Tempering it out leads to [[5-limit]] [[Porcupine family|porcupine temperament]].
+It serves as a period in the [[chromium]] temperament, where it is mapped to 1/24th of the octave.
 [[Category:Porcupine]]
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