You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.

10 lines
1.0 KiB

This file contains ambiguous Unicode characters!

This file contains ambiguous Unicode characters that may be confused with others in your current locale. If your use case is intentional and legitimate, you can safely ignore this warning. Use the Escape button to highlight these characters.

<!--pages/life/life.wxml-->
<form bindsubmit="formSubmit" report-submit="true">
<view class="life">
<image src="/images/09.jpg" />
</view>
<text class="word" decode="{{true}}">
&nbsp;&nbsp;&nbsp;&nbsp;《海岛算经》由刘徽于三国魏景元四年公元263年所撰本为《九章算术注》之第十卷题为《重差》。唐初开始单行体例亦是以应用问题集的形式。研究的对象全是有关高与距离的测量所使用的工具也都是利用垂直关系所连接起来的测竿与横棒。有人说是实用三角法的启蒙不过其内容并未涉及三角学中的正余弦概念。所有问题都是利用两次或多次测望所得的数据来推算可望而不可及的目标的高、深、广、远。此卷书被收集于明成祖时编修的永乐大典中现保存在英国剑桥大学图书馆。刘徽也曾对九章算数重编并加以注释。全书共9题全是利用测量来计算高深广远的问题首题测算海岛的高、远故得名。
</text>
</form>