Ramsay
"While Mr. Ramsay was meditating on these teachings of the great mathematician, Euler, and studying these notes and their vibrations, he was led to discover that the order of quantities above F, when taken below B, constitutes the Minor System. This was the discovery of the Law of Duality in Music. This Law of Duality in Mr. |Ramsay's hands asserts an importance not second even to the Law of Mathematical Ratios which rules in the genesis of the notes." [Scientific Basis and Build of Music, page 8]
See Also
approximation
cycles per second
DIRECT OBSERVATION UNRELIABLE
first comparison and combination of quantities
Frequency
Heisenberg uncertainty principle
laws of quantities and motions
Observation
order of quantities
Period
quantities and motions
quantities of strings
quantities
Ramsay - Duality in Quantities of Strings and Vibrations
relative quantities
Time
unit of quantities