Definition of wavelength in English:

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Pronunciation: /ˈwāvˌleNG(k)TH/


1 Physics The distance between successive crests of a wave, especially points in a sound wave or electromagnetic wave. (Symbol: λ)
Example sentences
  • Visible light consists of a ‘rainbow’ or spectrum of electromagnetic waves of different wavelengths.
  • Unfortunately, Earth's atmosphere blocks almost all wavelengths in the electromagnetic spectrum.
  • The most powerful telescopes in the world, spanning all wavelengths of the electromagnetic spectrum, were retooled and reprogrammed to observe the dying star.
1.1A wavelength as a distinctive feature of radio waves from a transmitter.
Example sentences
  • The transmitter generates low FM signals, which have a long wavelength, considerably longer than the circuit board itself.
  • The BBC had spread its music programming across its various wavelengths, but the late 1960s and the 1970s saw a movement for stations to be subject-specific.
2A person’s ideas and way of thinking, especially as it affects their ability to communicate with others: when we met we hit it off immediately—we’re on the same wavelength
More example sentences
  • Captain Ed and I are on the same wavelength!
  • I think the President was on the same wavelength.
  • ‘Most problems are a result of misunderstandings where partners are not operating on the same wavelength,’ said Barrie.
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