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1491

Centuries: 14th century - 15th century - 16th century

Decades: 1440s 1450s 1460s 1470s 1480s - 1490s - 1500s 1510s 1520s 1530s 1540s

Years: 1486 1487 1488 1489 1490 - 1491 - 1492 1493 1494 1495 1496


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Syntonic comma

... is equal to 702.96 cents, and four of them are equal to 2807.82 cents. A just major third has its notes in the frequency ratio 5:4, which is equal to 386.31 cents, and ...