324/323

Interval information

Ratio	324/323
Subgroup monzo	2.3.17.19 [2 4 -1 -1⟩
Size in cents	5.351578¢
Name	photisma
Color name	19u17u-2, nusu negative 2nd, Nusu comma
FJS name	[math]\displaystyle{ \text{d}{-2}_{17,19} }[/math]
Special properties	square superparticular, reduced
Tenney height (log2 nd)	16.6752
Weil height (log2 max(n, d))	16.6797
Wilson height (sopfr(nd))	52
Harmonic entropy (Shannon, [math]\displaystyle{ \sqrt{nd} }[/math])	~1.46188 bits
Comma size	small
S-expression	S18
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324/323, the photisma, is a 19-limit small comma. It is the difference between 18/17 and 19/18, as well as the amount by which 323/216 falls short of 3/2. It is close to a quarter of 81/80; four of them fall short of that interval by the unnoticeable comma 10884540241/10883911680 (~0.1 ¢), the lakisma.

Etymology

The name photisma was named after the photia temperament by Xenllium in 2023.

See also

• List of superparticular intervals