《为什么凉席这么凉?》歌词

[00:00:00] 本字幕由天琴实验室独家AI技术生成
[00:00:03] 熊爸爸的10万个为什么第410 集
[00:00:09] 为什么凉席这么凉呢
[00:00:15] 好奇熊宝、张丰裕、诺诺、应然、曹艺琳、周嘉、汶身沐溪蚝、雨轩等小朋友找到熊爸爸的家
[00:00:29] 问熊爸爸
[00:00:30] 熊爸爸你好
[00:00:32] 请问为什么凉席这么凉呢
[00:00:34] 这些小朋友善于观察
[00:00:37] 勤于思考
[00:00:39] 掌声送给他们
[00:00:44] 熊小问趴在凉席上问熊爸爸
[00:00:48] 爸爸
[00:00:49] 为什么凉席这么凉爽呢
[00:00:53] 熊爸爸在凉席上翻了个身
[00:00:57] 迷迷糊糊的说
[00:00:59] 嗯
[00:00:59] 哎
[00:00:59] 小问
[00:01:00] 你先睡觉吧
[00:01:01] 明天爸爸再给你解释好吗
[00:01:05] 熊爸爸的故事是这样的
[00:01:09] 夏天的晚上
[00:01:11] 没有空调是最难受的
[00:01:14] 这不
[00:01:15] 熊小问最愿意晚上开着空调睡觉
[00:01:21] 熊小问按着遥控器
[00:01:23] 一点儿反应都没有
[00:01:25] 屋子里热气滚滚
[00:01:28] 熊小问满身是汗
[00:01:31] 熊爸爸接过遥控器
[00:01:33] 对着空调试了很久
[00:01:36] 最后终于发现
[00:01:38] 原来是家里停电了
[00:01:43] 熊爸爸推开窗户
[00:01:46] 外面有微风袭来
[00:01:49] 可是依然挡不住高温
[00:01:52] 尤其是在床上睡觉
[00:01:55] 熊爸爸说
[00:01:57] 嗯
[00:01:57] 哎呀
[00:01:57] 小问
[00:01:58] 那你妈妈出差了
[00:02:00] 嗯
[00:02:00] 我们今晚就在地上睡吧
[00:02:03] 爸爸去找草席过来
[00:02:06] 熊小问
[00:02:08] 只得点点头
[00:02:10] 熊爸爸把草席铺开说
[00:02:13] 呃
[00:02:13] 小问
[00:02:14] 嗯
[00:02:14] 我们家呢
[00:02:15] 就剩下这一卷草席
[00:02:18] 只够一个人用的
[00:02:20] 爸爸不用了
[00:02:22] 你用吧
[00:02:26] 熊小问感动地接过草席说
[00:02:29] 嗯
[00:02:30] 谢谢爸爸
[00:02:31] 还是爸爸好
[00:02:33] 他躺在草席上
[00:02:35] 还是很热
[00:02:36] 热汗依旧不停的流
[00:02:40] 不一会儿
[00:02:41] 熊爸爸又出现了
[00:02:44] 这回
[00:02:45] 他的手上拿着一卷凉席
[00:02:49] 熊粑粑往地上一铺
[00:02:51] 冲着熊小问疾疾眼
[00:02:54] 乐呵呵地躺下去
[00:02:58] 熊小问这才知道自己被熊爸爸哄骗了
[00:03:03] 原来熊爸爸给熊小问睡草席
[00:03:08] 熊爸爸自己却水冰凉的凉席
[00:03:13] 熊小问脑袋一转
[00:03:15] 喊道
[00:03:16] 捏
[00:03:17] 爸爸
[00:03:17] 家里好像来了老鼠
[00:03:19] 在客厅里啃东西呢
[00:03:21] 你听
[00:03:22] 咯吱咯吱的响呢
[00:03:25] 听到熊小问这么一说
[00:03:27] 熊爸爸轻手轻脚走到客厅
[00:03:31] 准备打老鼠
[00:03:33] 可是半天也没听到任何动静
[00:03:37] 只得回屋继续睡觉
[00:03:41] 结果刚一进屋
[00:03:43] 发现自己的凉席上正睡着熊小问
[00:03:48] 原来这是熊小问的调虎离山之计呀
[00:03:54] 熊小问挤挤眼睛说
[00:03:57] 嗯
[00:03:57] 你个坏爸爸
[00:03:59] 居然有凉席不给我睡
[00:04:02] 熊爸爸呵呵一笑呢
[00:04:06] 你不也骗爸爸说有老鼠吗
[00:04:09] 那个小机灵鬼儿
[00:04:12] 最后
[00:04:13] 熊爸爸和熊小问一起躺在一块儿凉席上
[00:04:19] 享受着清凉
[00:04:23] 小朋友
[00:04:24] 你觉得熊爸爸是不想让熊小问睡凉席呢
[00:04:29] 还是熊爸爸在和熊小问做游戏呢
[00:04:35] 为什么凉席这么凉
[00:04:38] 暂停一下
[00:04:39] 你先自己想一想
[00:04:42] 熊爸爸稍候告诉你
[00:04:47] 为什么凉席这么凉呢
[00:04:50] 效果比较好的凉席大多用竹子为材料
[00:04:55] 竹子天生特性之一是具有比较大的比热容
[00:05:02] 比热容是什么
[00:05:04] 比热容是热力学中常用的一个物理量
[00:05:09] 表示单位质量物质的热容量
[00:05:14] 简单说就是物体改变温度时需要吸收或放出的热量
[00:05:21] 一般床单的比热容较小
[00:05:24] 它稍微稀一点热
[00:05:26] 温度就升高
[00:05:27] 你躺在上面
[00:05:29] 床单吸收了一点儿你的体温
[00:05:32] 它的温度就很快便高跟你的体温一样
[00:05:37] 甚至高于你的体温了
[00:05:40] 而竹子做的凉席比热容较大
[00:05:44] 它要吸收很多热量才会提高温度
[00:05:48] 你躺在上面
[00:05:49] 竹子会不停地吸收你身体的热量
[00:05:53] 但它自己的温度升高却很慢
[00:05:57] 需要很长时间
[00:05:59] 凉席才会跟你的体温一样
[00:06:01] 所以你会觉得睡凉席更凉快
[00:06:06] 另外
[00:06:07] 凉席有很多缝隙
[00:06:09] 据说这样会增加透气性
[00:06:12] 更有助于散热呢
[00:06:15] 你知道了凉席凉快的原理
[00:06:19] 那为什么有时候睡在地板上也会觉得凉快呢
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