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The frequency emitted by a moving object appears to increase when it is approaching, and falling when it is receding.

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12y ago

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Is true of the Doppler effect?

the Doppler effect involves moving objectsthe Doppler effect involves moving objects


Is it true that in phenomenon known as the Doppler effect electric current will flow when light shines on certain substances?

It is not true that the Doppler effect has anything to do with electricity and the flow of current. The Doppler effect involves pitch and sound frequency of moving objects, for example the apparent noise changes of an approaching car.


Can the Doppler effect occurs only with sound waves?

yes it is true for all waves.


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


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.


Which term describes an apparent change in frequency of sound waves of rapidly moving objects?

Doppler effect


The increase in frequency of an approaching source of electromagnetic radiation is termed the?

Doppler effect