et

helipeegeldus

1 substantive

Terminological databases

Metroloogia terminibaas

ID 618322 Last modified 02.01.2024
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Domain metrologymeasuring procedures
  • kui pikisuunaline helilaine tabab tasast pinda, peegeldub heli tingimusel, et peegeldava pinna mõõde on heli lainepikkusega võrreldes suur
  • nähtus, kus heli langeb mingile pindtakistusele ja pöördub tagasi samasse keskkonda, kust see tuli
  • when a longitudinal sound wave strikes a flat surface, sound is reflected in a coherent manner provided that the dimension of the reflective surface is large compared to the wavelength of the sound
helipeegeldumine preferred
Usage examples
  • Heli peegeldumisel kuuldaval helil on väga lai sagedusvahemik (20 Hz kuni umbes 17 000 Hz) ja seega väga lai lainepikkuste vahemik (umbes 20 mm kuni 17 m), ning selle tulemusena varieerub peegelduse üldine olemus sõltuvalt pinna tekstuurist ja struktuurist, nt poorsed materjalid neelavad mõningast energiat ja töötlemata materjalid kipuvad peegelduma mitmes suunas - energiat hajutama, mitte seda sidusalt peegeldama.
sound reflection
Usage examples
  • Sound by sound reflection has a very wide frequency range (from 20 Hz to about 17 000 Hz), and thus a very wide range of wavelengths (from about 20 mm to 17 m), and as a result, the overall nature of the reflection varies according to the texture and structure of the surface. For example, porous materials will absorb some energy, and rough materials tend to reflect in many directions—to scatter the energy, rather than to reflect it coherently.

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