Percussion Plus Red Plastic Wind Whistler

106cm long wind whistle - twirl faster for a higher pitch!
Code
PP3030

Typical Availability:

Standard stock line - delivery usually 2-3 working days

Last Stock Check: last stock check

inc VAT £7.20
List Price:
£7.50

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These whistling tubes or 'noise-makers' will keep children entertained for hours, whilst also demonstrating the fascinating physics behind music. Simply twirl the red tube around and the air moving through it produces a range of tones, loosely on the harmonic scale. When you twirl faster a higher tone is produced.

When twirling the Wind Whistler the air molecules within the tube begin to bump together, they vibrate and produce sound waves. 

This very simple item, believe it or not, beautifully demonstrates 'Bernoulli's Principle' - that fast moving air molecules create lower pressure. 

The idea is that the far end of the hose is moving much faster than the end being held so the higher pressure at the held end effectively sucks up air which in turn creates the whistle.

Simply twirl in mid air for unusual whistling sound, The faster you twirl, the higher the pitch, Made from 106cm length of strong red plastic tubing, Great as a group or classroom activity

Weight: 0.00 KGS

Size (WxHxD): 0 x 0 x 0 cm