Steam whistle

A steam whistle is a device used to produce sound in the form of a whistle using live steam, which creates, projects, and amplifies its sound by acting as a vibrating system.[1]

  1. ^ Chanaud, Robert (1970). "Aerodynamic whistles". Scientific American. 222 (223): 40–46. Bibcode:1970SciAm.222a..40C. doi:10.1038/scientificamerican0170-40.