L159
Waves are the children of the struggle between ocean and atmosphere, the ongoing signatures of infinity. Rays
from the sun excite and energize the atmosphere of the earth, awakening it to flow, to movement, to rhythm, to
life. The wind then speaks the message of the sun to the sea and the sea transmits it on through waves – and
ancient, exquisite, powerful message.
These ocean waves are among the earth’s most complicated natural phenomena. The basic features
include a crest ( the highest point of the wave), a trough (the lowest point), a height (the vertical distance from
the trough to the crest), a wave length (the horizontal distance between two wave crests), and a period(which is
the time it takes a wave crest to travel one wave length).
Although an ocean wave gives the impression of a wall of water moving in your direction, in actuality
waves move through the water leaving the water about where it was. If the water was moving with the wave,
the ocean and everything on it would be racing in to the shore with obviously catastrophic results.
An ocean wave passing through deep water causes a particle on the surface to move in a roughly circular
orbit, drawing the particle first towards the advancing wave, then up into the wave, then forward with it and
then – as the wave leaves the particles behind – back to its starting point again.
From both maturity to death, a wave is subject to the same laws as any other ‘living’ thing. For a time it
assumes a miraculous individuality that, in the end, is reabsorbed into the great ocean of life.
The undulating waves of the open sea are generated by three natural causes: wind, earth movements of
tremors, and the gravitational pull of the moon and the sun. Once waves have bean generated, gravity is the
force that drives them in a continual attempt to restore the ocean surface to a flat plain.
L159的更多相关文章
- 利用 cos 组件实现jsp中上传附件
需求:在web功能中附件上传功能为最基本的功能之一,所以用cos组件做了一个附件上传的demo.附件上传功能的实现可以利用其它的java组件实现,相关资料网上比较多. 说明步骤:下载组件并安装 --& ...
- Linux用户抢占和内核抢占详解(概念, 实现和触发时机)--Linux进程的管理与调度(二十)
1 非抢占式和可抢占式内核 为了简化问题,我使用嵌入式实时系统uC/OS作为例子 首先要指出的是,uC/OS只有内核态,没有用户态,这和Linux不一样 多任务系统中, 内核负责管理各个任务, 或者说 ...
- 基于传统方法点云分割以及PCL中分割模块
之前在微信公众号中更新了以下几个章节 1,如何学习PCL以及一些基础的知识 2,PCL中IO口以及common模块的介绍 3,PCL中常用的两种数据结构KDtree以及Octree树的介绍 ...
- [WPF] 用 Effect 实现线条光影效果
1. 前言 几个月前 ChokCoco 大佬发布了一篇文章: CSS 奇技淫巧 | 妙用 drop-shadow 实现线条光影效果 在文章里实现了一个发光的心形线条互相追逐的效果: 现在正好有空就试试 ...
随机推荐
- 20145329《Java程序设计》第八周学习总结
教材学习内容总结 日志 1.java.util.logging包提供了日志功能相关类与接口. 2.使用日志的起点是Logger类,Longer类的构造函数标示为protected,不同包的类药取得Lo ...
- C++开学第二次作业(5.14)
开学第二次作业(5.14) 代码传送门 题目 给定一个常数K以及一个单链表L,请编写程序将L中每K个结点反转.例如:给定L为1→2→3→4→5→6,K为3,则输出应该为3→2→1→6→5→4:如果K为 ...
- ubuntu下apt-get的配置文件是哪个
答:在/etc/apt/apt.conf 这个配置文件里可以指定使用代理,如: Acquire::https::proxy "http://myproxy.com:8080/";
- mybatis动态插入数据(使用trim标签)
知识点: 当向一张表里插入数据,传入的参数不固定时,使用到mybatis的动态插入(trim标签) 参考博客:https://blog.csdn.net/h12kjgj/article/details ...
- 拓扑排序 - hdu 1285(普通和优先队列优化)
2017-09-12 19:50:58 writer:pprp 最近刚开始接触拓扑排序,拓扑排序适用于:无圈图的顶点的一种排序, 用来解决有优先级别的排序问题,比如课程先修后修,排名等. 主要实现:用 ...
- ZJOI2017游记
$Day$ $-1$ 听说可以去$ZJOI2017$打酱油,终于可以出去走走辣$QAQ$... 上次出去打比赛似乎是$PKUSC$?? 好吧,至少可以一览国家预备队爷们的风采... 准备把膝盖留在浙江 ...
- node.js 之 http 架设
Node.js 安装配置 下载node.js安装mis 打开:cmd cd到node.js安装目录下 输入nodejs --version 显示版本号,证明安装成功 在其根目录下建server.js ...
- html和JavaScript,用户点击浏览器后退按钮,或者返回上一步自动刷新方式
浏览器用户返回上一步,自动刷新 方式一. <input type="hidden" id="refreshed" value="no" ...
- python3安装tensorflow遇到的问题
1. 使用命令:sudo pip3 install --upgrade \ https://storage.googleapis.com/tensorflow/linux/cpu/tensorflow ...
- java 判断一个字符串中的数字:是否为数字、是否包含数字、截取数字
题外话: JavaScript中判断一个字符是否为数字,用函数:isDigit(); 一.判断一个字符串是否都为数字 package com.cmc.util; import java.util.re ...