Plastic Whirly Tube Sound Hose Instrument Science Toy

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You are looking at the ebay auction of a...Plastic Whirly Tube Sound Hose Instrument Science ToyThese tubes are Pink, 74cm in length and produce musical overtones in 5ths and a frequency ratio of 3/2. That's as much of the musical science as I can tell you. As described by Paul Doherty Here's how it works...Hold one end in your hand.Twirl the other end in a circle.Listen to the sound made by the tube.Vary the speed of the tube.Notice that the pitch of the whirly jumps from one note to another and increases as the speed of the twirling is increased.That is, high speed twirling creates high pitch notes see for more scientific explaination,,, /~pauld/activities/AAAS/aaas2001.htmlBUT THIS IS MORE THAN A MUSICAL TOY, IT IS AN ELEPHANT'S NOSE, A DRAGON'S TAIL, A MICROPHONE, A SNAKE, AND MAYBE EVEN A SUBA TANK FOR DEEP SEA MAKE BELIEVE! IT'S ONLY LIMIT IS YOUR OWN IMAGINATION!I HAVE USED THESE TOYS AS AN INVALUABLE TOOL FOR WORKING WITH CHILDREN AND ADULTS IN CREATIVE MOVEMENT AND DANCE SESSIONS. I HAVE HUNDREDS OF PROPS AND THIS SIMPLE PIECE OF MAGIC NEVER FAILS TO ENTERTAIN. THERE IS NO OTHER TOY THAT IS SO EFFECTIVE AT SOUND MAKING EITHER BY SPINNING OR BY SPEAKING/SINGING INTO IT. (THIS IS ESPECIALLY GOOD WITH THE USE OF A MICROPHONE AND SPACEY EFFECTS). EVERY KID SHOULD OWN ONE OF THESE PIECES OF MUSICAL HISTORY AND SCIENCE OF SOUNDSorry read more

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