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The "phenomena" criterion



Phenomena

Prince Rupert's drops

• EFP

• The Fibonacci sequence generates from the addition of the two preceding terms, and its ratio approximates a proportion that exists as a dynamic equilibrium, at root of much that is beautiful.

• Comma of Pythagoras

The ratio of 12 perfect fifths and 7 octaves: 1 to 1.0136...

7 octaves: 128.00 12 fifths: 129.746337890625
"23.46 cents (where equal-tempered semitones differ by 100 cents.)" about one-quarter of a semitone (the step, e.g., between a black and a white piano key .

Soliton

Tunguska

• Antikythera


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