"In the second comparison and combination of the three primary ratios, 1/9 is the unit of quantities, and 3 is the unit of motions; and the same primes and the same process as already used in the first comparison and combination will give the same relative quantities; and the motions will be 3, 6, 9, and 15, compared with the original unit." [Scientific Basis and Build of Music, page 16]

See Also

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amplitude
Distance
first comparison and combination of motions
first comparison and combination of quantities
first condition in the first ratio
first condition in the third ratio
first condition of the second ratio
key to motion
Law of Motion
laws of motion
Laws of Music
laws of oscillatory and vibratory motions
laws of quantities and motions
laws of vibratory motion
Mode
Motion
movement
Newton Laws of Motion
Newton Third Law of Motion
Number
Period
quantities and motions
Ratio
Relativity
second comparison and combination of the three primary ratios
theory of relativity
third comparison and combination of the three primary ratios
three primary ratios
Time
Variable