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Code Number: 11A10.13
Demo Title: Larynx - Vocal Chords
Condition: Good
Principle: Physiology
Area of Study: Physiology
Equipment: Model Larynx and Vocal Chords and Stadium Horns with Adjustable Pressure Membranes.
Procedure: Show the model and move the vocal chords.
You can adjust the frequency of the horns by applying pressure to the membranes with the PVC tube or your fingers.
References:
- Tim Heffernan, "A Beautiful Thing - Class Trachea", Popular Mechanics, Oct. 2014, p. 84 - 85.
- Jearl Walker, "3.60. Coughing and Sneezing", The Flying Circus of Physics, p. 170.
- Jearl Walker, "3.4. Speaking and Signing", The Flying Circus of Physics, p. 148 - 149.
- Martin Gardner, "A Talking Machine", Martin Gardner's Science Tricks, p. 61.
- Jessica Boddy, Asif Ghazanfar, "If Monkeys Could Talk", Popular Science, Winter 2019, p. 107.
- Sara Stein, "Harrumph!", The Science Book, p. 184.
- Herb Strongin, “Investigating How Speech, Humming, and Whistling Sounds Are Made“, Science on a Shoestring, p. 142.