Lecture Experiments Department of Physics

Beats

Experiment no.: 5.1.7

Schwebungen

The interference of two harmonic waves of equal amplitude and slightly different frequencies generates beats that are visible on the computer oscilloscope. Comment: The video shows an out-dated set-up.

📄 Detailed experiment description

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Videos for this experiment

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Images for this experiment

Overview

Sim: both frequencies off

Sim: one frequency on

Sim: both frequencies equal

Sim: beat around 290 Hz

Sim: beat around 290 Hz, detail

Sim: beat around 490 Hz

Sim: beat around 490 Hz, detail 1

Sim: beat around 490 Hz, detail 2

Meas1: Organ pipe, equal frequencies

Meas1: Organ pipe, beat

Meas1: Organ pipe, beat detail

Meas1: tuning forks, beat

Meas2: Organ pipe, equal frequencies

Meas2: Organ pipe, beat 1

Meas2: Organ pipe, beat 2

Meas2: tuning forks, beat

Documents for this experiment

Experiment set-up for beats

2 oscillations and the beating behaviour that they produce

Amplitude spectrum of a beat