Wave Phenomena

The Doppler Effect

How relative motion changes observed frequency

Show Me The Physics waves lesson

 

Every wave below has a different ____

Doppler.mp4

Doppler Effect

 

[ Flash ]

 

 

 

 

Two characteristics
of the train's sound
change.

Name them.

 

 

 

 

 

Loudness and

Frequency

(A.K.A. pitch) 

 

 

Video Instruction

showmethephysics.com

 

 

 

 

Doppler Effect

School Blocks YouTube? Use the file below.

| Doppler_Effect.mov |

St. Mary's U.
Astronomy and Physics

A bicyclist with a siren audibly demonstrates the Doppler effect (turn your speakers up!)
For more information on this and many other physics and astronomy demos, please visit: Classroom Physics Demos

 

 

 

 

 


Doppler Effect

[ HTML5 ]
Show Me The Physics Website

 

 

 

 

 

D.  Doppler Effect – variation in the observed frequency of a wave when there is relative motion between the source of the wave and the receiver




Doppler Effect V = 14 m/s
(B. Barrett)

Doppler Effect V = 18 m/s
(B. Barrett)

 

 

Stationary Ambulance? How can you tell?

 

 

 

 

 

 

Which way is this ambulance moving?

 

 

 

 

To the left

 

The Doppler Effect  II
Colorado University

The Doppler Effect
Michael Fowler -  Flashlets

 

 



 

"Which way is the

source of this wave

moving?"

 

 

 

 

 

 

"To the right, where

the frequency

is higher"

 

 

 

 

Doppler Effect
Mouse

[ HTML5 ]
Show Me The Physics Website

 

 

 

 

Radar Guns & Waves

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Show Me The Physics Website

 

 

 

 

 

Review - The crack of a whip

 

Bullwhip_Cracking.mov

 

Did you know .....

 

The crack of a whip is the sound of the
tip breaking the speed of sound.

 

 

 

 
 
A Doppler radar dome sends a microwave pulse toward a rainstorm; the echo returns with a shifted frequency that reveals the storm's wind speed and direction NYSSLS Reading Passage icon

NYSSLS Reading Passage · Waves

How Doppler Radar Decodes the Sky

Open Reading Passage →

Check Your Understanding

5 quick questions — pick an answer to see if you’re right.

1. The Doppler effect is

2. A train blowing its horn moves toward you. Compared with the horn's actual pitch, the pitch you hear is

3. An ambulance with its siren on drives away from you. What do you hear?

4. As a car with a siren speeds past, does the frequency produced by the siren itself change?

5. Doppler radar bounces microwaves off a rainstorm. What does the frequency shift of the echo reveal?

Diffraction →