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A change of frequence in a wave (usually in a sound, or electromagnetic wave), due to the relative movement between the source of the sound and an observer.

A change of frequence in a wave (usually in a sound, or electromagnetic wave), due to the relative movement between the source of the sound and an observer.

A change of frequence in a wave (usually in a sound, or electromagnetic wave), due to the relative movement between the source of the sound and an observer.

A change of frequence in a wave (usually in a sound, or electromagnetic wave), due to the relative movement between the source of the sound and an observer.

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14y ago

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