Acoustics Kit

Description The acoustics kit allows students to carry out numerous experiments on acoustics independently. A wide variety of sound sources are studied to begin with and the concepts of noise, bangs and tones as well as pitch and loudness are investigated. Waves along a rope are used to illustrate harmonic vibrations and overtones. There is also some extensive study of various different musical instruments. Different high-pitched tones are generated by means of a monochord and the ensuing intervals are calculated experimentally. These studies are expanded to other instruments and can easily lead over to a study of musical notes.

Experiment Topics:
Noise, bangs, pure tones
Vibrating air columns
Whistles and pipes
Vibrating bars, plates and bells
Infra-sound
Ultra-sound
Tuning fork with plotter pen
Travelling waves along a rope
Velocity of propagation of sound
Moving sources of sound (Doppler effect)
Plate vibrations (Chladni figures)
Vibrations of a bell
Standing waves on a rope, overtones
Sounds of musical instruments
Timbre of the human voice
Measurement of wavelength (Kundt figures)
Resonance
Helmholtz ball resonators
Sound analysis
Loudness
Pitch of string instruments
Pitch of wind instruments
Reed pipe
C-major scale and its intervals
Triads, harmonies
Semitones, major and minor
Dimensions: 530x375x155 mm3 approx.
Weight: 4.5 kg approx.

Contents:

1 Monochord, with ruler and musical scale
1 Steel string
1 Perlon string
1 Spring balance on support
1 Reed pipe with 8 valves
1 Tuning fork with plotter pen, 21 Hz
1 Tuning fork, 440 Hz
1 Light-metal tuning fork, 1700 Hz
1 Pipe
1 Variable-length closed air column
1 Tuned open air column
1 Chladni disc with handle
1 Galton whistle
1 Kundt pipe with retaining clip
5 g Lycopodium powder in sprinkling cellar
1 Metallophone with beater
1 Rope for demonstrating waves
1 Helmholtz resonator, 70 mm dia.
1 Helmholtz resonator, 52 mm dia.
1 Helmholtz resonator, 40 mm dia.
1 Helmholtz resonator, 34 mm dia.
1 Screw clamp
1 Plastic block
1 Plunger