English

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)