좋은 소음, 나쁜소음과학동아 ｜ 1992년 06호
waves. Good "noise" for us, but for the pests.Intentional noise can be annoying but helpful - like the beeping of a truck when it backs up. Researchers have found that the murmuring, clucking, clicking noises parents make do indeed calm and attract infants. Apparently all mammals make clicking noises to their offspring.Noise is also used to confuse spies in the opposite camp, whether that ...
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