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This chart shows all of the coin types, and their sizes, grouped by coins of similar size and by general composition. ... Small Cent 19.05 mm 4.67 g 1856-1864 2.5 g ...
The Pythagorean A ♭ (at the left) is at 792 cents, G ♯ (at the right) at 816 cents; the difference is the Pythagorean comma. Equal temperament by definition is such that A ♭ and G ♯ are at the same level. 1 ⁄ 4-comma meantone produces the "just" major third (5:4, 386 cents, a syntonic comma lower than the Pythagorean one of 408 cents).
By definition, in quarter-comma meantone, one so-called "perfect" fifth (P5 in the table) has a size of approximately 696.6 cents ( 700 − ε cents, where ε ≈ 3.422 cents); since the average size of the 12 fifths must equal exactly 700 cents (as in equal temperament), the other one must have a size of 700 + 11 ε cents, which is about 737.6 ...
Bullion Mintage [5] Uncirculated Mintage 2010 1 Arkansas Hot Springs National Park: NP1 4/19/2010 33,000 27,000 2 Wyoming Yellowstone National Park: NP2 6/1/2010 3 California Yosemite National Park: NP3 7/26/2010 4 Arizona Grand Canyon National Park: NP4 9/20/2010 26,019 5 Oregon Mount Hood National Forest: NP5 11/15/2010 26,928 2011 6 Pennsylvania
Matron Head large cent, 1816–1839 (Copper except as noted) Year Mint Mintage Comments 1816 (P) 2,820,982 1817 (P) 3,948,400 (P) 5 Proof 1818
Equivalently, one can use 4 √ 5 instead of 3 / 2 , which produces the same slightly reduced fifths. This results in the interval C E being a just major third 5 / 4 , and the intermediate seconds (C D, D E) dividing C E uniformly, so D C and E D are equal ratios, whose square is 5 / 4 .
50 Cent and Kelly Clarkson had an open conversation about how they're discussing racial injustice and the Black Lives Matter movement with their kids. When it comes to talking about these issues ...
A just perfect fifth has a size of 3:2 (about 701.96 cents), and four of them are equal to 81:16 (about 2807.82 cents). A just major third has a size of 5:4 (about 386.31 cents), and one of them plus two octaves (4:1 or exactly 2400 cents) is equal to 5:1 (about 2786.31 cents). The difference between these is the syntonic comma.