A steam whistle is a device used to produce sound in the form of a whistle using pressurized steam, which creates, projects, and amplifies its sound by acting as a vibrating system. == Operation == The whistle consists of the following main parts, as seen on the drawing: the whistle bell (1), the steam orifice or aperture (2), and the valve (9).
A steam whistle is a device used to produce sound in the form of a whistle using pressurized steam, which creates, projects, and amplifies its sound by acting as a vibrating system. == Operation == The whistle consists of the following main parts, as seen on the drawing: the whistle bell (1), the steam orifice or aperture (2), and the valve (9).
Source: Wikipedia "Steam whistle" · CC BY-SA 4.0
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