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A train whistle is at a higher pitch (note) as it approaches you and then drops to a lower pitch as it moves away. This effect is called?
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A train whistle is at a higher pitch (note) as it approaches you and then drops to a lower pitch as it moves away. This effect is called?

User Udi Dahan
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4 votes
The effect being mentioned is called "The doppler effect".
User Benjifisher
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the effect is called The doppler effect
User Metaphysiker
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