Code Number: 3D40.65
Demo Title: Bull-Roarer
Condition: Good
Principle: Frequency of Sound Waves
Area of Study: Oscillations & Acoustics
Equipment:
Bullroarer
Procedure:
Make sure that good quality string or wire is used for the Bullroarer so that there is no danger of it flying off when whirled overhead.
References:
- Kaye M. Elsner, "The Australian Bullroarer", TPT, Vol. 32, # 4, Apr. 1994, p. 236.
- R. D. Edge, "A Paper Wave to Explain the Doppler Shift", TPT, Vol. 25, # 6, Sept. 1987, p. 400.
- S-143: Richard Manliffe Sutton, Demonstration Experiments in Physics.
- Carson I. A. Ritchie, "Bull-Roarer", Making Scientific Toys, p. 56.
- Jearl Walker, "3.81, Australian Bullroarer", The Flying Circus of Physics Ed. 2, p. 177.
- Cash, Parker, and Taylor, "Make a Bull-Roarer", 175 More Science Experiments, p. 31.
- "The Bull Roarer", PIRA News, Vol. 8, No. 2, p. 14.
- Brown, Science for You - 112 Illustrated Experiments, p. 56.
- Joey Green, "Sonic Blaster", The Mad Scientist Handbook, Vol. 2, p. 95.