Space Horn Toy

 

Code Number: 3B25.55

Demo Title: Spring Horn Toy - Space Phone

Condition: Excellent

Principle: Dispersion

Area of Study: Oscillations & Acoustics

Equipment: 

Space Horn Toy

Procedure:

Dispersion of sound ( whistlers) as it travels through the spring may be observed using a microphone and the MatLab program.  Just tap the end of the spring or strike it on a table edge when ready.

References:

  • Kim Ludwig-Petsch, Michael Hirth, Jochen Kuhn, "The Sound of a Laser Blaster: Acoustic Dispersion in Metal Springs Analyzed with Mobile Devices and Open-Source PC Audio Software", TPT, Vol. 60, #1, Jan. 2022, p. 28.
  • Roset Khosropour, Rawling Lamberton, Scott Paulinsky, "SpacePhone: Propagating Interest in Waves", TPT, Vol. 31, # 9, Dec. 1993, p. 529.
  • Pat Murphy, Ellen Macaulay, and the staff of the Exploratorium, "Carnaval", Exploratopia, p. 218.
  • Sara Stein, "Noisemakers - Pig Grunter", The Science Book, p. 182.
Whistlers - Geomagnetosphere Activity