steam whistle

A steam whistle is a device that produces a loud sound by releasing high-pressure steam. When steam is forced through a narrow opening or tuned to specific resonances, it creates vibrations that generate sound waves. Originally used on steam locomotives and ships for signaling, the whistle's pitch and tone depend on its size and shape. It operates by converting the energy of pressurized steam into audible sound, serving as an effective auditory signal for communication or alerts in industrial and transportation settings.