第707章 实验课与启民智
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说罢，乐台拿起一张纸板，中间一个圆孔，又拿出一个圆柱，放在前面，接着又拿出两个纸裁的箭头，箭头上面写着一个光字。
“假设这个圆柱就是光源，那么咱们只看能够穿过圆孔的光，因为其他的光……怎么样了？”乐台突然问道。
“其他的光被圆孔周围的纸板挡住了。”李泰举手站了起来，答道：“这正好能够让我们专注于去观察需要穿透圆孔的光线。观察光穿过圆孔之后的样子。”
乐台点了点头：“不错，很好。”
李世民摸着胡须看看自己儿子，脸上的笑都崩不住啊。
夏鸿升不禁鄙视李泰，这货也是故意在自己老爹面前表现，寻常上课能见李泰哼一声就不错了，更别提主动起来回答问题。
“小孔成像……”李世民压低了声音说道：“夏卿之前在宫中当着乐台等人的面做的实验就是这个吧。”
夏鸿升点了点头：“正是这个实验。”
关于墙上的人影的事情，夏鸿升自那之后没有过问过，不该问的别问，问了就是麻烦。只是后来听说是因此事杀了几个内侍，是宫里残留的李建成余孽，然后也就没有下文了。
“这……”李世民皱了皱眉头，说道：“此法之前在宫中为祸，夏卿为何要教给这些学子们？”
夏鸿升笑着摇了摇头，问道：“陛下觉得，为何当初宫中出现鬼影，其他人都惊惧万分，唯独微臣不怕？陛下觉得，为何当时雷击皇宫，朝臣都担心是上苍示警，却唯独微臣不将那天雷放在眼里？正是因为微臣懂的其中的道理。陛下您想想看，宫中的人都知道小孔成像的道理，那当初墙上出现影子，也就不过是一件小事而已了。倘若大家都知道雷电的知识，那也就不会有人觉得打个雷闪个电就是什么皇帝失德这种毫无关联的事情了。”
李世民看着看着夏鸿升，却听夏鸿升又继续说道：“正是人们知道的东西太少，所以才会见到一些其实很平常的事情，就疑惑不解，进而被欺骗，被蛊惑，做出错误的事情来。微臣举个不恰当的例子来，古时候陈胜吴广起义，让人钻草丛子里面装狐狸叫，然后说这是上天的预告，要让他称王，那些人就全都信了。这是何其愚昧！就是因为他们所拥有的知识太少了啊！再拿当初微臣火烧蝗虫来说。微臣知道其中的道理，做起来很简单，可在旁人看来，却是神技一般，幽姬害拿着这个东西蛊惑了不少信徒，到现在关内都还有人供奉什么红莲仙子。若是其他人都有这个知识，又如何能被幽姬蛊惑？这就是启民智的重要性啊！人人都以为，启民智会引发百姓的动乱，其实，愚昧和无知才能引发动乱，启民智反而使百姓具有思考的能力，去判断自己应不应该这么做。启民智才能使社会安定兴旺！人们都惧怕未知的事物，而对于已知的事物，就不会再认为它有多么神奇了。启民智，百姓有了分辨是非，思考问题的能力，对于君王唯一的坏处在于，百姓们有了知识，有了思想，懂的思考，就会去评判一个帝王，这个帝王就唯有通过自己的勤政英明，不昏聩不偷懒，来获得百姓的支持，而非是其他玄之又玄的东西了。”
夏鸿升这番话说得其实很是大胆，但是李世民闻言却是浑身一震，转头若有所思的看着做起实验来的学子们。
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