Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- adjective Occurring without periodicity; irregular.
from The Century Dictionary.
- Without periodicity.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- adjective That does not
recur periodically - adjective physics That does not have a
periodic vibration - adjective mathematics for which any return to it may occur at irregular times; not
periodic .
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adjective not recurring at regular intervals
Etymologies
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Examples
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Some trajectory orbits are aperiodic, meaning that they do not repeat themselves on any time scales.
Chaos Bishop, Robert 2008
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Schrödinger proposed that a gene could be stable from one generation to another if it is an 'aperiodic' crystal – in other words, something with a regular but non-repeating structure.
The Nobel Prize in Physiology or Medicine 1962 - Perspectives 1962
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But life is characterized by specified complexity: the aperiodic, information-rich sequences of DNA and proteins, for instance, which appear nearly random to standard information theory.
Blast From the Past 2010
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Like a big, macroscopic, aperiodic quasi-crystal complete with embedded dislocations.
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Like a big, macroscopic, aperiodic quasi-crystal complete with embedded dislocations.
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Are Penrose's instincts correct that he solved the aperiodic tiling problem instinctually instead of algorithmically?
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Penrose points to aperiodic tiling for his non-algorithmic explanation.
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Naturally occurring aperiodic crystals that matched Penrose Tilings.
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Like in ecosystems, things in a steady state economy are changing constantly in both periodic and aperiodic ways.
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Mathematically, it was shown that it is possible to completely cover a two dimensional plane with a distinct set of shapes ( "tiles") and not end up with a repeating pattern ( "aperiodic").
ruzuzu commented on the word aperiodic
"The phenomenon that (Bradley) Voytek and other scientists are investigating in a variety of ways goes by many names. Some call it “the 1/f slope” or “scale-free activity”; Voytek has pushed to rebrand it “the aperiodic signal” or “aperiodic activity.”"
-- "Brain’s ‘Background Noise’ May Hold Clues to Persistent Mysteries" by Elizabeth Landau (https://www.quantamagazine.org/brains-background-noise-may-hold-clues-to-persistent-mysteries-20210208/)
March 15, 2022