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What else can I help you with?
The changing pitch of a police cars siren as it moves by you is an example of what?
The Doppler effect
How is the Doppler effect on light waves analogous to the apparent change in pich of a passing train whistle?
When the train gets close to you the sound wave are compressed making a higher pitch noise and as the train passes the sound waves become lengthened. That is the doppler effect in a nutshell. Now just compare it to how the doppler effect changes light waves.
Why would a passing race car display more Doppler effect than a passing police siren?
The amount of Doppler shift depends on speed - the faster vehicle will show more Doppler shift.
What conditions would have to be met in order for an ambulance with its siren on not to exhibit the Doppler effect when it passes you?
As far as I know, there will always be a Doppler effect when there is relative movement between the object that emits sound, and the observer (i.e. you, who are listening to the sound).
What is the name of the Austrian physicist who gave his name to a frequency variation effect?
Christian Doppler
Does Doppler effect occur for all types of waves?
yes
For the Doppler effect to occur what must happen?
For the Doppler effect to occur, there must be relative motion between the source of the wave and the observer. As the source moves towards or away from the observer, the frequency of the wave appears to change, causing a shift in the perceived wavelength.
Is true of the Doppler effect?
the Doppler effect involves moving objectsthe Doppler effect involves moving objects
The change in the Doppler effect causes what not to occur with it?
The change in the Doppler effect does not cause a change in the frequency of the wave source itself; it only affects how the frequency of the wave is perceived by an observer in relative motion to the source.
Who was the Doppler Effect named after?
The Doppler Effect was named after Austrian physicist Christian Doppler, who first described it in 1842.
What did Christian Doppler do?
He discoverd the Doppler effect
Does the Doppler effect occur when only some types of waves or all types of waves?
It is typical of all waves.
Why big bang theory is presented?
It is quite clear, from the Doppler effect, that the Universe is expanding.It is quite clear, from the Doppler effect, that the Universe is expanding.It is quite clear, from the Doppler effect, that the Universe is expanding.It is quite clear, from the Doppler effect, that the Universe is expanding.
What is the change in frequency of a sound due to motion of the source?
The change in frequency of a sound due to motion of the source is called the Doppler effect. If the source is moving towards the observer, the frequency of the sound appears higher (blueshifted), while if the source is moving away, the frequency appears lower (redshifted). This effect is commonly experienced with passing vehicles and sirens.
What does the Doppler Effect provide evidence for?
The Doppler effect proves that sound travels in waves.
What exactly is the Doppler effect?
The Doppler effect is the change in frequency of a sound wave. The Doppler effect causes a siren or engine to have a higher pitch when it is approaching than it does when it is receding.
Who discovered the Doppler effect?
Christian Doppler did not invent Doppler Radar. He described what is now known as the Doppler effect in 1842 in Austria. It is used to describe the behavior of waves (such as light or sound) that are emitted by a moving object. Doppler radar, which utilizes the Doppler effect, was developed in the United States during World War II.
