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## Doppler effect

en.wikipedia.org/wiki/Doppler_effect

The Doppler effect (or the Doppler shift) is the change in frequency of a wave (or other periodic event) for an observer moving relative to its source. It is named ...

## The Doppler Effect - The Physics Classroom

www.physicsclassroom.com/class/waves/Lesson-3/The-Doppler-Effect

The Doppler effect is observed whenever the source of waves is moving with respect to an observer. The Doppler effect can be described as the effect produced ...

## Waves, motion and frequency: the Doppler effect — Einstein Online

www.einstein-online.info/spotlights/doppler

The frequency of a wave-like signal - such as sound or light - depends on the movement of the sender and of the receiver. This is known as the Doppler effect.

Jun 6, 2013 ... A visual explanation of the Doppler effect. Subscribe: http://bit.ly/1NtFJuf Facebook: ...

## What is the Doppler effect?

www.qrg.northwestern.edu/projects/vss/docs/communications/3-what-is-the-doppler-effect.html

The Doppler effect causes the received frequency of a source (how it is perceived when it gets to its destination) to differ from the sent frequency if there is motion ...

## Doppler Effect - NCSA Web Archive

archive.ncsa.illinois.edu/Cyberia/Bima/doppler.html

Jun 24, 1995 ... The Doppler Effect. A Familiar Example. Heard an ambulance go by recently? Remember how the siren's pitch changed as the vehicle raced ...

## The Doppler Effect

csep10.phys.utk.edu/astr162/lect/light/doppler.html

This phenomenon is called the Doppler Effect , and is associated with the wave nature of sound: the relative motion of the source causes the wavelength of the ...

## BBC - GCSE Bitesize: The Doppler effect

www.bbc.co.uk/schools/gcsebitesize/science/aqa/origins/redshiftrev2.shtml

The Doppler effect. You may have noticed that when an ambulance or police car goes past, its siren is high-pitched as it comes towards you, then becomes ...

## The Doppler Effect

www.phys.uconn.edu/~gibson/Notes/Section6_3/Sec6_3.htm

6.3 The Doppler Effect. So far, we have only considered stationary sources of sound and stationary listeners (or observers). However, if either the source or the  ...

## Origins: Hubble: Tools: Doppler Effect & Redshift | Exploratorium

www.exploratorium.edu/hubble/tools/doppler.html

doppler effect. Physics 101: Redshift and the Expanding Universe by Pearl Tesler . Throughout our universe, light is bursting from stars, bouncing off planets, ...

### The Doppler Effect for Sound - HyperPhysics

hyperphysics.phy-astr.gsu.edu

Doppler Effect. You hear the high pitch of the siren of the approaching ambulance, and notice that its pitch drops suddenly as the ambulance passes you. That is ...