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

  1. 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 --& ...

  2. 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 ...

  3. 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    ...

  4. [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

  1. 条件编译#ifdef的妙用详解

    c语言中条件编译相关的预编译指令,包括  #define.#undef.#ifdef.#ifndef.#if.#elif.#else.#endif.defined. #define           ...

  2. myeclipse 方法上加上@Override就报错的处理方法

    在有@Override方法上面会报错如下: The method oncreate(Bundle) of type HelloWorld must override or implement a su ...

  3. MySQL——修改数据表

    1.添加单列: ALERT TABLE tbl_name ADD [COLUMN] col_name column_definition [FIRST|AFTER col_name 其中tbl_nam ...

  4. 搭建时间服务器(linux)

    我们搭建集群环境的时候,时间必须是要统一的,才能保证集群数据的一致性. 一般操作是直接使用NTP,跟默认的时间服务器同步,但是最好还是让所有节点跟集群中的某台作为时间服务器的节点同步. 步骤:(节点有 ...

  5. jQuery实现输入框提示,当获取焦点时提示消失,当失去焦点时内容为空则显示提示,否则保留输入信息

    首先看效果 默认状态下 获取焦点状态下 什么也没输入,离开 有输入离开 输入默认值离开 代码 <!DOCTYPE html> <html> <head> <m ...

  6. php入门(三)

    PHP 面向对象: 在php5中 var就是public的别名. 变量 $this 代表自身的对象. PHP_EOL;为换行符 构造函数+析构函数 <?php class Site { /* 成 ...

  7. Struts2 入门实例

    一.最简登录 Demo:login.jsp——web.xml——struts.xml——LoginAction.java——struts.xml——index.jsp 1.下载 Struts2 框架: ...

  8. 讲一下numpy的矩阵特征值分解与奇异值分解

    1.特征值分解 主要还是调包: from numpy.linalg import eig 特征值分解:  A = P*B*PT  当然也可以写成 A = QT*B*Q  其中B为对角元为A的特征值的对 ...

  9. 【Python】常用排序算法的python实现和性能分析

    作者:waterxi 原文链接 背景 一年一度的换工作高峰又到了,HR大概每天都塞几份简历过来,基本上一天安排两个面试的话,当天就只能加班干活了.趁着面试别人的机会,自己也把一些基础算法和一些面试题整 ...

  10. 缓存技术内部交流_04_Cache Aside续篇

    额外参考资料: http://www.ehcache.org/documentation/3.2/expiry.html F. Cache Aside 模式的问题:缓存过期 有时我们会在上线前给缓存系 ...