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为什么冰会把舌头粘住
更新时间: 2020-11-03 00:00:00  

当把刚从冰柜里拿出的冰放在舌头上并停留一小会后,冰会粘在舌头上。这是因为冰是一种很好的导热体,温度又很低,可以很快带走舌头上唾液的热量,进而冷却唾液,使唾液结冰,舌头就被粘在了冰上。不过,这种现象不会持续太久,舌头会散发热量来融化冰,进而使舌头和冰分离。有时冰都没来得及冻住舌头,舌头的热量就已经使冰融化了。

跟冰比起来,金属的导热性更好。在冰天雪地的冬季,如果用舌头舔金属,唾液会被迅速冷却、冻结,舌头产生的热量不足以融化被冻结的唾液。此时千万不要拉扯舌头,以免受伤,只能等待别人来救。

关键词: 为什么 舌头

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