# I am the Watcher. I am your guide through this vast new twtiverse.
#
# Usage:
# https://watcher.sour.is/api/plain/users View list of users and latest twt date.
# https://watcher.sour.is/api/plain/twt View all twts.
# https://watcher.sour.is/api/plain/mentions?uri=:uri View all mentions for uri.
# https://watcher.sour.is/api/plain/conv/:hash View all twts for a conversation subject.
#
# Options:
# uri Filter to show a specific users twts.
# offset Start index for quey.
# limit Count of items to return (going back in time).
#
# twt range = 1 1
# self = https://watcher.sour.is/conv/4fddela
两端固定的纸张拱起所成曲线的方程是什么？**
既不是正态分布也不是悬链线、抛物线，准确的说角度在弧长参数下解的形式是椭圆函数，还需要通过曲线论基本定理映射回Descartes坐标系。**
### 结果如下：**
分子动力学结果
### 概述
这个问题可以简化为二维平面的弹性曲线。一般情况是Euler弹性线问题，简单的说就是 _仅仅考虑弯曲能情况下，一条曲线两端在位移和角度的约束下能量最小的构型是什么？_**
![](https://picx.zhimg.com/v2-3c9039a5cb7ac9d81f5a3a223abfd227_720w.jpg?source=b1748391?r ... ⌘ Read more_