Keely
The individual molecules constantly oscillate through one third the molecular diameter, with a frequency of 20,000 per second. The range of oscillation inducted molecular substances by the same initial vibration differs in degree, which can be measured in substances and metals and expressed mathematically. This was actually so done in certain substances and metals by Keely, who called this mathematical ratio of frequency transmission the "coincident of transmission." [Snell Manuscript - the book, MOLECULAR AGGREGATES]

See Also

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one third
third
thirds
two-thirds of one-third
two-thirds of the one-third