2430/2401
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| Ratio | 2430/2401 |
| Factorization | 2 × 35 × 5 × 7-4 |
| Monzo | [1 5 1 -4⟩ |
| Size in cents | 20.785092¢ |
| Name | nuwell comma |
| Color name | r4y-3, quadru-ayo negative 3rd |
| FJS name | [math]\text{dd}{-3}^{5}_{7,7,7,7}[/math] |
| Special properties | reduced |
| Tenney height (log2 nd) | 22.4762 |
| Weil height (log2 max(n, d)) | 22.4935 |
| Wilson height (sopfr (nd)) | 50 |
| Harmonic entropy (Shannon, [math]\sqrt{n\cdot d}[/math]) |
~3.75817 bits |
| Comma size | small |
| open this interval in xen-calc | |
2430/2401, the nuwell comma, is a small 7-limit comma measuring about 20.8 cents. It is amount by which four septimal minor thirds 7/6 fall short of a major seventh 15/8.
Temperaments
Tempering out this comma alone in the 7-limit leads to the nuwell temperament. See Nuwell family for the rank-3 temperament family where it is tempered out.
Etymology
The name nuwell was given by Gene Ward Smith in 2005 as a contraction of nusecond and orwell[1].