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Doppler effect

Doppler Effect Tutorial
Image: iStockphoto.com/tazytaz

Doppler Effect Tutorial

Have you ever heard the pitch of an ambulance siren change as it moves past you? This pitch change is the result of the Doppler effect (sometimes called the Doppler shift).

While it's most commonly associated with sound waves, the Doppler effect can apply to any kind of wave, including light waves, water waves, and even electromagnetic waves! Investigate the Doppler effect.

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Build a Doppler Buzzer Ball

Build a Doppler Buzzer Ball

Create your own Doppler Buzzer Ball and experiment with the Doppler effect. Use these instructions for this hands on activity. More...

Activity
SEED
The Doppler Effect

The Doppler Effect

The Doppler effect can be observed for any type of wave: sound waves, water waves or light waves. Get a detailed explanation of how frequency and wavelength interact. More...

Article
The Physics Classroom
The Doppler Effect Demonstration

The Doppler Effect Demonstration

Science students explain why standing at the bus stop is a great place to study the Doppler Effect. More...

Video
SciCast Films
Doppler Effect Animation

Doppler Effect Animation

The reason that the pitch of a sound changes as it moves past you is because of the Doppler effect. Learn about the relationship between sound waves and the Doppler effect here! More...

Interactive
University of Toronto
Doppler Effect Simulation

Doppler Effect Simulation

This applet simulates a ripple tank demonstrating the Doppler effect. Adjust the speed, resolution, source frequency, and brightness to see changes reflected in the wave pattern. More...

Interactive
Paul Falstad
Doppler Effect: Michio Kaku

Doppler Effect: Michio Kaku

What does watching muscle cars drag race have in common with making stellar observations? The Doppler effect! Find out how in this video featuring physicist Michio Kaku. More...

Video
Science Channel
Doppler Shift

Doppler Shift

The Doppler effect is also known as the Doppler shift. A sound waves frequency appears to shift based on motion. This interactive gives a great visual representation. More...

Interactive
McGraw-Hill
Interactive: Moving Targets

Interactive: Moving Targets

Astronomers use the Doppler effect to measure how fast stars are moving and their direction. Try this interactive to see how they do it. More...

Interactive
NOVA/PBS
Mini-Quiz: Doppler Effect for Sound

Mini-Quiz: Doppler Effect for Sound

Do you think you have mastered the Doppler effect? Test your knowledge with this mini quiz from the School for Champions. More...

Interactive
School for Champions

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