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| Pennywhistle Science | ||||
| by Sean Lane Fuller | ||||
| This is going to be short for now. The main thing that makes a whistle work is edge tones. Edge tones are produced when wind is cut by a sharp edge. When wind impacts a sharp edge little whirlwinds are formed on the two sides of the edge alternately and they move forward to make room for their successors. The little whirlwinds are formed at regular intervals and so produce a musical pitch. That's what makes a whistle whistle. | ||||
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