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Echo Chamber

Q. You often read that a duck’s quack does not echo? Is it true? Why?

A. This is a good example of a question that flies in the face of logic. It smells fowl.

Echoes are a little bit like a reflection in the mirror. You look in a mirror, your reflection bounces back at you.

Instead of being a light wave, though, an echo is a sound wave that bounces back after sound hits a solid object. Unless ducks are the vampires of the audio world, there just would be no logical explanation for having echo-proof quacks. Ducks also appear during the day, and if they were vampires, this couldn’t happen.

Bottom line: The quack of a duck does indeed echo.

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