第十章 初唐数学第一课
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“这个很简单，用一个公式就行。”
薛朗热爱骑行，偶尔还会爬个山什么的，望远镜是必备装备，测距计算则是女朋友的哥哥教给他的。没做成的大舅哥是陆军某部的，跟薛朗比较投契，薛朗许多玩的东西，军刀、药之类的，都是他给的。
扒拉过来一张纸，薛朗掏出钢笔，把公式写下来，举了个例子，随手把数字写下来——
“等等！”
平阳公主制止薛朗，指着纸上的数字：“这是何意？”
薛朗拍拍额头，画图他都记得写汉字数字，这会儿要计算演示就习惯性的写阿拉伯数字了。
“这是数字，佛郎机习惯的写法，因为书写、学习、计算都比较方便，所以也改了以前的书写方式。”
一边说，一边把对应的汉字写法和数字写出来，一目了然。
平阳公主拿着纸张看，没说话，直接给薛朗重新拿了一张纸出来，让他在那上面计算，写着数字汉字对应的，则被拿在手里看。写个计算演示很快，不过一会儿的功夫，连举的例子一块儿，一看就能明白。
平阳公主把两张纸收到一起，放在案几上，玉手轻轻地覆盖其上，直接问：“这些都是在佛郎机学的？”
“是。根据当地的制度，小孩子六岁入学，分为小学、中学、大学。小学六年，中学分为初中和高中，各三年。除了学先贤典籍，还要学数学、物理、化学等课程。”
薛朗这么一说，不止平阳公主，连秀美女子都露出感兴趣的神色，秀目一转，插话：“数学，顾名思义，是指数算之学问，物理是格物致知之理，对否？”
“正是。不知这位娘子如何称呼？”
隋唐时候，称呼年轻的女子，一般称之为娘子。这个常识薛朗是知道的，倒不怕出错。
“这是本宫的女官柳氏。”
“原来是柳女官。数学和物理学习的内容就和柳女官说的差不多。”
“那化学学的是什么？”
柳女官好奇的问道。薛朗笑答：“是研究物体变化的道理。比如，铜器为何会生锈，酸、碱有何不同，与不同的物体接触时，酸碱会产生什么反应、变化等等。”
这柳女官明显是个好学之人，听到薛朗这么说，脸上满是神往之色：“世上还有研究这些学问的，真想看看。薛郎君可有书籍？”
薛朗微笑：“书籍现成的没有。待在下安顿停当，倒是可以写出来。”
连个网址都能记得清楚的薛朗，学过的化学书自然更加记忆深刻，写出来自然也不难。
大约是从未听说过有人从那么远的地方来，看薛朗的谈吐、衣着，所言所行，皆与唐人不同。
柳女官问了许多问题，从衣食住行开始，问题也五花八门，薛朗结合现代的情况尽量回答，知道的就告知，问到自己不懂的领域，也坦诚告知自己并不了解。全知全能的是神，不是人。吹牛吹大了会破，装逼装大了会挨雷劈的。
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