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Science and Engineering

Can You Hear a Delay?

Voices and other sounds take time to move through the air. However, the time it takes for sound to cross a room is so short that you never notice a delay between hearing a voice and seeing the movement of the speaker's lips.

But if you were in a wind tunnel, might the speed of sound be different? And if so, would you be able to notice the delay between voice and lips?

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