DescriptionThis heavy, black iron pipe (about 4 lb) has a metal alloy screen fitted into one end. By heating the screen with a flame from a burner for about 10 seconds, the vertical pipe will produce a loud tone for as much as 30 seconds. The noise is produced because certain frequencies of sound from the turbulent flow of heated air resonate within the tube cavity. Turning the tube horizontally disrupts the flow of air and the sound stops; rotating the tube to the vertical position returns the sound. Consequently, it is possible to give the illusion of pouring sound into a beaker and then returning it to the pipe. In addition, a matched pair will produce a clearly audible beat frequency. This incredible demonstration was featured at the 1996 Clemson Biennial DivCHED Convention and at the 1996 NEACT Summer Convention. Full instructions and explanation provided.
This product is shipped from our supplier's warehouse in CT, United States
This product is brand new and includes the manufacturer's warranty, so you can buy with confidence.
A 25% handling charge is levied against all authorized returns except those due to our error. Unauthorized returns are subject to a 40% handling charge. Damages & defects must be reported to us within 14 days.
Customers Who Bought This Item Also Bought
You recently viewed items