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郑勇从此开始了教学生涯,虽然只有不长的一个月,但是他却有些度日如年的感觉,最主要的原因并不是那个墨正,似乎跟他卯上了,那种锲而不舍的劲,把他给吓着了,这老头是要拼命吗?化学这门学问,现在还没有造出琉璃来,怕是很多实验也没法做,他这是想干什么啊!

这一天,他有意的去外面溜达了一阵子还悄悄的回去,刚要拐过墙角,便听到了一阵子喧闹声,他立即停下脚步,认真听去。却听到了老墨那有些沙哑的声音道:“你们不要急,一个个来,不然我怎么能回答的过来呢?”

于是,他出现了几个人的呵斥声,喧闹为之一静。

好像是有人举手了,那老墨道:“小儿剩,你来提问。”

那叫小狗剩的便问道:“化学键分离时吸收能量,结合时释放能量,而能量又表现为热量形式,我想问师爷,我们怎么来确定这种热量的大小多少呢?”

只听那老墨哈哈一笑继续沙哑道:“这个问题问得好啊,这直接就关乎了化学的实际操作了,而这化学的实际操作又叫作化学实验,就是把所学的化学知识,通过实践来获得最实际的现实结果。而要做实验,就离不开工具,这实验工具中就有一种叫做温度计,专门用于测量温度用的。”

那小狗剩听了又问道:“这温度怎么测量啊?看不见,又摸不着,只能感受到。”

那老墨沙哑的笑了起来,这笑声就仿佛是用一个什么东西在玻璃板上用力划,难听的让人要爆炸。笑过之后老墨继续沙哑道:“这温度自然是看得见也摸得着的。你想一想,你看到火是不是一种高温?其实看到的水也是一种高温,而水的另一种形态是冰,冰的温度一定会比水低,所以,你也是可以看到低温的。而摸呢,其实还是一种感受,是皮肤表面神经的感应结果。都学过热胀冷缩的道理吧?而温度计就是利用了这一道理,把某一种很对温度敏感的液体倒入一个水晶棒几,而水晶的内部钻一极细的小孔,小孔穿过水晶棒形成一个极细的水晶管,而这个小孔的最下方扩大一些,这样就可以容纳那种敏感液体了。当温度发生变化时,这时这种液体就会因为涨或者缩,而在那极细的水晶管内显示出他不断上升或下降的液体面,通过这样的方式,我们就可以制造出温度计来了。”

那叫小狗剩的一定惊讶无比之后就是对着老墨不断地叫唤着:“师爷,你太厉害了,师爷,你是不是受了师祖的真传,以后是不是我们不用再问师祖直接问您了?”咳咳……那老墨咳了几声道:“我也只是在你师爷那里多学了一些,咱们还是都要向你师祖询问才是,学问学问,就是边学边问,把一件事情搞得清清楚楚,明明白白。比如:之前我们看到水往下流,我们也不会说什么,为什么司空见惯了,不以为然了。可是,你一认真了,才会发现,这里居然还藏着万有引力这么一个大秘密。现在你们也知道咱们脚下的大地是圆的了,如果 『加入书签,方便阅读』
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