Doppler Ball Manufacturer,Supplier and Exporter in India

Doppler Ball

Product Code : ILS-SAR-11740

Indian Lab Suppliers supplies the Doppler Ball (Product ID: 11740) as part of its sound and resonance range. A foam ball with a battery-powered buzzer inside for hearing the Doppler effect.

Quick Answer

Switch on the buzzer and throw the ball between two people, or tie on a string and swing it in a circle. Listeners hear the pitch rise as the ball approaches and fall as it moves away, because the sound waves are bunched up ahead of the moving source and spread out behind it. The faster the ball moves, the larger the frequency shift. A 9 V battery is included.

Key Specifications

ParameterDetail
BodyFoam ball
Sound sourceBattery-powered buzzer inside
Battery9 V, included

Where This Is Used

Used in sound lessons on the Doppler effect. For other sound demonstrations see the Sound Pipe (Product ID: 11742) and the Sympathetic Tuning Fork Set (Product ID: 11744). Throw it gently and clear the area before swinging it on a string. Browse the full Sound and Resonance range or related Wave Motion products.

Frequently Asked Questions

What does the ball demonstrate?
The Doppler effect: a change in the heard pitch of a moving source.

How fast must it move?
Fast enough for the shift to be heard; faster throws give a larger shift.

Is the battery included?
Yes, a 9 V battery is included.

Related Categories

Sound and Resonance · Wave Motion · Physics Lab Equipment

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Office Address

Works: #975 Malleshwaram,
Bengaluru, Karnataka 560003

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