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Whistle
Whistle . .
Minimum Order Quantity: 1000 Piece
Product Brochure
Packaging Type | Regular standard |
Color | all |
Material | Plastic |
Quality | A grade |
Usage/Application | whistle |
Age Group | all |
Regular | Standard |
a small wind instrument in which sound is produced by the forcible passage of breath through a slit in a short tube. a police whistle. : a device through which air or steam is forced into a cavity or against a thin edge to produce a loud sound. a factory whistlewhistle is an instrument which produces sound from a stream of gas, most commonly air. It may be mouth-operated, or powered by air pressure, steam, or other means. Whistles vary in size from a small slide whistle or nose flute type to a large multi-piped church organWhistles have been around since early humans first carved out a gourd or branch and found they could make sound with it. In prehistoric Egypt, small shells were used as whistles.[1] Many present day wind instruments are inheritors of these early whistles. With the rise of more mechanical power, other forms of whistles have been developed.[2]One characteristic of a whistle is that it creates a pure, or nearly pure, tone. The conversion of flow energy to sound comes from an interaction between a solid material and a fluid stream. The forces in some whistles are sufficient to set the solid material in motion. Classic examples are Aeolian tones that result in galloping power lines, or the Tacoma Narrows Bridge (the so-called "Galloping Gertie" of popular media). Other examples are circular disks set into vibration
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