String Vibrator

SKU: WA-9857A Category: Tag:


The String Vibrator transforms mechanical wave demonstrations to hands-on activities that every lab group can easily perform. Featuring an elegant design with no motors or speakers, the String Vibrator allows students to study the fundamental characteristics of mechanical waves including wave speed, frequency, wavelength, amplitude, interference and resonance.

Typical Applications

  • Standing Wave Patterns
  • Mechanical Wave Characteristics


  • Two recessed clamping surfaces allow it to be secured to a table with a C-clamp
  • Built in rod clamps allow for mounting vertically or horizontally on a standard lab rod
  • Tough custom plastic case to stand up to student use


  • String Vibrator Unit
  • Wave String (3 meters)

How It Works

A neodymium magnet fastened to the stainless steel tongue is free to move within a coil. By supplying AC current to the coil, an alternating magnetic field is created which vibrates the magnet and tongue. Attached a string or elastic cord using the hole in the tongue and secure the other end to produce a waveform.

*** WA-9857A does not include a power adapter/ supply.

PASCO recommends the Sine Wave Generator, Function Generator or the 550 or 850 Universal Interfaces as the source for the signal and power for the String Vibrator.


Acceptable output power from a variable signal
  • ±1 Amp at 10 V max
Approximate dimensions
  • 12.7 cm x 7.5 cm x 5 cm
Thickness at recessed clamping surface
  • 3 cm