Fourier Synthesizer - Addition Of Waves

Purpose

Demonstrate addition of two sine waves with variable phase difference.

Equipment

Fourier synthesizer with triple-trace oscilloscope.

Setup Time

5 min.

Images

h2-28

Description

Two identical sine waves from the University of Maryland Fourier Synthesizer are added together and the sum is viewed along with each component using a three-trace oscilloscope. The sum can be studied as the phases of one or both of the component waves are varied. This demonstration can be used as an aid in the study of beats or interference of sound waves.