第605章 新旧时代的交锋(终)~!(1 / 2)

一千多年前,墨子就进行了小孔成像的实验。他明确指出,光是直线传播的,物体通过小孔所形成的像是倒像。这是因为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,故所成的像为倒像。他还探讨了影像的大小与物体的斜正、光源的远近的关系,指出物斜或光源远则影长细,物正或光源近则影短粗,如果是反射光,则影形成于物与光源之间。

除此之外,墨子还对平面镜、凹面镜、凸面镜等进行了相当系统的研究,得出了几何光学的一系列基本原理。他指出,平面镜所形成的是大小相同、远近对称的像,但却左右倒换。如果是二个或多个平面镜相向而照射,则会出现重复反射,形成无数的像。凹面镜的成像是在“中”之内形成正像,距“中”远所成像大,距“中”近所成的像小,在“中”处则像与物一样大;在“中”之外,则形成的是倒像,近“中”像大,远“中”像小。凸面镜则只形成正像,近镜像大,远镜像小。

这里的“中”为球面镜之球心,墨子虽尚未能区分球心与焦点的差别,把球心与焦点混淆在一起,但其结论与近现代球面镜成像原理还是基本相符的。

在光学史上,墨子是第一个对几何光学进行系统研究的科学家。如果说墨子奠定了几何光学的基础,也不为过分,至少在中国是这样。正如李约瑟在《中国科学技术史》物理卷中所说,墨子关于光学的研究,“比我们所知的希腊的为早”,“印度亦不能比拟”。

此刻,墨槐听到李泽轩的答案,并不像先前那两次那样意外,而是继续问道:“为何会有倒立物体的像~?李县男如果不想解释,那可以把这个问题当成老夫的第四个问题~!”

李泽轩摆手笑道:“不必不必,既然巨子想听为什么,那小子就好好解释解释,不算做那五道题之一~!”

他现在对墨槐的拉拢之心越来越重,所以他的自称,也从刚开始的本爵,变成了小子,虽说他有信心赢得这场赌局,但给别人一点面子,让别人输的心服口服,这样墨槐以后教学生也会教的心甘情愿、尽心尽力啊~!这个不叫懦弱,而叫胜者的风度~!

李纲却是微皱眉头,暗道李泽轩有些托大了,但墨槐也是他的老友,他总不能这个时候跳出来阻止吧~?

李泽轩让小安仁拿来了笔墨,然后示意墨槐过来,他才一边画着小孔成像系统的光路图,一边徐徐说道:

“巨子请看~!这个是蜡烛,蜡烛的火焰看成是由许多小发光点组成的,每个发光点都向四面八方发射着光。总会有一小束光,笔直地穿过小孔,在小孔后方形成一个小光斑。所以,烛焰上的每一个发光点都会在白纸上形成一个对应的光斑,全部光斑在白纸上就组成了一个烛焰的像…………”

随着李泽轩的一番讲述,墨槐恍然大悟,现在他终于既知其然又知其所以然了,但同时,他又用一种非常奇怪的眼光看着李泽轩,就好像是在看,怪物~!

这一刻,墨槐对李泽轩的来历,产生了非常大的好奇,首先,能在十四五岁的年纪成为武道宗师,这本来就已经是世间绝无仅有的特例了,然而,李泽轩在这些非常偏门的领域中,居然还有这么深的造诣,文武双修,而且每方面都能达到常人难以企及的存在,墨槐想象不出什么样的家族,什么样的师父,能教出这样的妖孽~?

“怎么样~?不知小子说的对不对~?”

李泽轩被墨槐的眼光看的头皮发麻,于是忍不住说道。

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