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Wave Motion


G3-31: Spring and Horns

Purpose: To audibly illustrate transmission of energy in a mechanical wave

H4-58: MODULATION - AM RADIO

Category: H4 Music

Purpose: Show amplitude modulation in in AM radio signals.

H4-52: SPECTRUM ANALYSIS OF MODULATION

Category: H4 Music

Purpose: Compare and analyze the frequency spectra of various modulated sounds such as tremolo, vibrato, and beats.

H4-51: MODULATION - AM AND FM

Category: H4 Music

Purpose: Demonstrate AM and FM signal modulation as an introduction to vibrato and tremolo.

H4-41: DRUM

Category: H4 Music

Purpose: Demonstrate a pretty drum.

H1-44: ULTRASONIC MOTION DETECTOR WAVE FORM

Category: H1 Nature of Sound

Purpose: Show the wave form of the ultrasonic signal created by the ultrasonic motion detector.

H1-41: ULTRASONIC MOTION DETECTOR

Category: H1 Nature of Sound

Purpose: Demonstrate how an ultrasonic motion detector works.

H1-32: WAVETEK AND AUDIO CART - EQUAL SOUND LEVEL STEPS

Category: H1 Nature of Sound

Purpose: Illustrate the effect on the ear of successive changes of exactly 10 dB.

H1-31: SOUND LEVEL METER

Category: H1 Nature of Sound

Purpose: Demonstrate use of a sound level meter.

H1-27: SPEED OF SOUND - LISSAJOUS FIGURES

Category: H1 Nature of Sound

Purpose: Measurement of the speed of sound in air using Lissajous figures.

H4-36: LIP-BLOWN TUBE

Category: H4 Music

Purpose: Determine the frequencies and harmonic numbers of the resonances in a plastic tube blown like a trumpet.

H1-26: SPEED OF SOUND IN GARDEN HOSE

Category: H1 Nature of Sound

Purpose: Direct measurement of the speed of sound in air.

H1-25: SPEED OF SOUND BETWEEN TWO MICROPHONES

Category: H1 Nature of Sound

Purpose: Measure the speed of sound by determining the travel time of a pulse between two microphones.

H1-24: SPEED OF SOUND IN HELIUM

Category: H1 Nature of Sound

Purpose: Determine the speed of sound as a function of gas density.

H1-22: SPEED OF SOUND - USING PULSES

Category: H1 Nature of Sound

Purpose: Determine the speed of sound in air.

H1-21: SPEED OF SOUND - PHASE CHANGE

Category: H1 Nature of Sound

Purpose: Determine the speed of sound.

H1-12: VISIBLE WAVEFORMS ON LARGE SPEAKER

Category: H1 Nature of Sound

Purpose: Show the loudspeaker motion produced by waves of various shapes.

H4-18: LISSAJOUS FIGURES WITH SOUND

Category: H4 Music

Purpose: Demonstrate the relation between "consonance" (musical intervals) and frequency ratios.

H1-11: MICROPHONE AND OSCILLOSCOPE

Category: H1 Nature of Sound

Purpose: Show the wave shape of various sounds.

H4-12: LISSAJOUS FREQUENCY MEASUREMENT

Category: H4 Music

Purpose: Show how frequencies can be matched using Lissajous figures.
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