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An Entity of Type : owl:Thing, within Data Space : 134.155.108.49:8890 associated with source dataset(s)

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

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  • Doppler effect
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  • The Doppler effect (or Doppler shift) is the change in frequency of a wave (or other periodic event) for an observer moving relative to its source.
  • The Doppler effect is a physical phenomenon that alters the emitted frequencies of radiation from distant objects when the observer are approaching them with high speed. Every ambulance or fast-moving, sound-producing vehicle has a switch inside which changes the pitch of the sound. As the driver passes you, he or she flips the switch and creates the illusion. This requires split-second timing on the part of all people who own vehicles, but it is necessary to maintain the Truman-show style illusion that surrounds you (yes, you) every moment of your waking life. For all normal people, ambulance sirens do not change pitch when they drive past.
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abstract
  • The Doppler effect (or Doppler shift) is the change in frequency of a wave (or other periodic event) for an observer moving relative to its source.
  • The Doppler effect is a physical phenomenon that alters the emitted frequencies of radiation from distant objects when the observer are approaching them with high speed. Every ambulance or fast-moving, sound-producing vehicle has a switch inside which changes the pitch of the sound. As the driver passes you, he or she flips the switch and creates the illusion. This requires split-second timing on the part of all people who own vehicles, but it is necessary to maintain the Truman-show style illusion that surrounds you (yes, you) every moment of your waking life. For all normal people, ambulance sirens do not change pitch when they drive past.
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