1
Everything Science www.everythingscience.co.za
6. Doppler effect
Physics
Grade 12
2
Everything Science www.everythingscience.co.za
Doppler effect with sound
The Doppler effect is the change in the observe...
3
Everything Science www.everythingscience.co.za
Applications
The Doppler effect can be observed in all types of waves, in...
4
Everything Science www.everythingscience.co.za
For more practice see: everythingscience.co.za
Shortcode: ESCMV
Upcoming SlideShare
Loading in …5
×

Doppler effect

176
-1

Published on

Chapter 6: doppler effect, summary presentation for grade 12 science

Published in: Education
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total Views
176
On Slideshare
0
From Embeds
0
Number of Embeds
0
Actions
Shares
0
Downloads
4
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

Doppler effect

  1. 1. 1 Everything Science www.everythingscience.co.za 6. Doppler effect Physics Grade 12
  2. 2. 2 Everything Science www.everythingscience.co.za Doppler effect with sound The Doppler effect is the change in the observed frequency of a wave when the source or the detector moves relative to the transmitting medium. The following equation can be used to calculate the frequency of the wave according to the observer or listener: If the direction of the wave from the listener to the source is chosen as positive, the velocities have the following signs: f L= (v±vL v±vS )f S
  3. 3. 3 Everything Science www.everythingscience.co.za Applications The Doppler effect can be observed in all types of waves, including ultrasound, light and radiowaves. Sonography makes use of ultrasound and the Doppler effect to determine the direction of blood flow. Light is emitted by stars. Due to the Doppler effect, the frequency of this light decreases and the stars appear redder than if they were stationary. This is called a red shift and means that the stars are moving away from the Earth. This is one of the reasons we can conclude that the Universe is expanding.
  4. 4. 4 Everything Science www.everythingscience.co.za For more practice see: everythingscience.co.za Shortcode: ESCMV
  1. A particular slide catching your eye?

    Clipping is a handy way to collect important slides you want to go back to later.

×