324/323
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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]\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]\sqrt{nd}[/math])
~1.46188 bits
Comma size
small
S-expression
S18
Open this interval in xen-calc
| Interval information |
2nd, Nusu comma
reduced
(Shannon, [math]\sqrt{nd}[/math])
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.