324/323
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| Ratio | 324/323 |
| Subgroup monzo | 2.3.17.19 [2 4 -1 -1⟩ |
| Size in cents | 5.3515778¢ |
| 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 | |
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.