Bastille comma

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Interval information
Factorization 21426 × 5-596 × 7-15
Monzo [1426 0 -596 -15
Size in cents 24.63794¢
Name bastille comma
Special properties reduced
Tenney height (log2 nd) 2851.98
Weil height (log2 max(n, d)) 2852
Wilson height (sopfr (nd)) 5937
Harmonic entropy
(Shannon, [math]\sqrt{n\cdot d}[/math])
~4.07329 bits
Comma size small
open this interval in xen-calc

Bastille comma is a 2.5.7 subgroup comma associated with temperament-merging 1407edo and 1789edo, which together produce 14/07/1789, the date of storming of Bastille.

Bastille comma is a small comma measuring about 25 cents, or alternately about 29 steps of 1407edo and 37 steps of 1789edo. However, because the circle of generators is so large, each of them is flattened by a really small amount of the comma, well below the step sizes, thus enabling the tuning.