Blackjackisma
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Ratio | 854296875/843308032 |
Factorization | 2-10 × 37 × 58 × 7-7 |
Monzo | [-10 7 8 -7⟩ |
Size in cents | 22.413372¢ |
Name | blackjackisma |
Color name | Lr7y8-6, Lasepru-aquadbiyo comma |
FJS name | [math]\text{7d}{-6}^{5,5,5,5,5,5,5,5}_{7,7,7,7,7,7,7}[/math] |
Special properties | reduced |
Tenney height (log2 nd) | 59.3216 |
Weil height (log2 max(n, d)) | 59.3403 |
Wilson height (sopfr (nd)) | 130 |
Harmonic entropy (Shannon, [math]\sqrt{n\cdot d}[/math]) |
~3.89688 bits |
Comma size | small |
open this interval in xen-calc |
The blackjackisma (monzo: [-10 7 8 -7⟩, ratio: 854296875/843308032) is a small 7-limit comma. It is the amount by which a stack of seven 15/14's exceeds the classical minor sixth (8/5).
Temperaments
Tempering out this comma in the 7-limit results in the rank-3 blackjackismic temperament.
Etymology
This comma was named by Gene Ward Smith in 2011 for the fact that the Blackjack scale contains a pump for this comma[1].