第707章 实验课与启民智
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李世民在夏鸿升留给他的别墅里面休息了一会儿，然后又同众人一起下来，离开了生活区，往另外一处地方过去。龙腾小说ltxs520.com
众人到了那里，但见那里建着许多作坊，于是就问道：“夏卿，这书院之中，为何有这么多工坊？”
夏鸿升答道：“这些工坊就是为了叫学子们做实验用的。一些实验具有一定的危险性，必须在先生的指导下进行。而且，不少实验需要诸多工具，放在教室里面做也不方便。所以就将工具都放在作坊里面，学生做实验的时候就由先生领着来这里做。”
正说话间，就看见一群学子正结队走了过来，领头的人正是乐台，见这么站了这么多人，有些意外。待到了近前看清楚了，顿时脸色一变，立刻就大步走了过来。
“乐先生无须多礼，莫要惊扰了学子们。”李世民敢在乐台就要行礼之前对他说道：“今日只为看看乐先生所教授的实验课，乐先生还请自便。”
“这……是！”乐台点了点头，又回到了一众学子那里。众学子都好奇的往这边瞅，夏鸿升眼尖，立刻就瞅见在众人都好奇的往这边看的时候，唯独有俩人一个劲儿的往后缩。
夏鸿升咧嘴笑了起来，那俩人正是李恪和李泰。
李泰天资聪颖，而且又跟着夏鸿升学过不少基础，所以虽然年纪小，但实际上反而比其他的学子还要好。
至于李恪，虽然也不错，却终究比之李泰稍微不如了些，主要是输在他之前没有跟夏鸿升学过，而李泰则有夏鸿升给他打下的基础。
“尔等用心听课，莫要分神！”乐台见学子们都往那边看，于是说了一声，然后转身进入了其中一间工坊里面。
众学子也都进去，那里面的布局同教室就不一样了，两人一张大长方形桌子，作为实验台。
上面亦有讲台和黑板，不过那讲台也同下面一样，是一张实验台。
乐台走了上去，众人也都跟着进来，站在了最后面。
“先前咱们讲到光线，课本上说，光在同种均匀介质沿直线传播。所谓介质，咱们说过，就是光在什么东西里面穿行，这种东西就叫做介质。我们白日里看到的阳光，晚上照的煤油灯的灯光，这些都是光，他们都是沿着直线传播的。今日为了证明这个原理，咱们一起来做课本上小孔成像的实验。”乐台上去之后对学子们讲到：“影到，在午有端，与影长。说在端。影。光之人，煦若射，下者之人也高；高者之人也下。足蔽下光，故成影于上；首蔽上光，故成影于下。在远近有端，与于光，故影库内也。简单来说，光线经过物体再穿过小孔时，由于光的直线传播，物体上方成像于下，物体下部成像于上，会呈现出一个倒影来。咱们先用模型，来展示一下这个过程。”
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