dumb hole

English

Etymology

Similar to black hole, formed with dumb (“mute, silent”). Used at least since 1994[1].

Noun

dumb hole (plural dumb holes)

  1. A phenomenon in which phonons (sound perturbations) are unable to escape from a fluid that is flowing more quickly than the local speed of sound.

Synonyms
  • sonic black hole

References
  1. W. G. Unruh (1994), “Dumb Holes and the Effects of High Frequencies on Black Hole Evaporation”, in (please provide the title of the work)‎
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