光速：电磁辐射在真空中传播的速度，是一个基本的物理常数，其数值由国际公约确定为每秒299,792,458米，符号为c。
the speed at which light travels in a vacuum; the constancy and universality of the speed of light is recognized by defining it to be exactly 299,792,458 meters per second
同义词： light speed / c
光速-引用次数：3
Superluminous(the phase speed higher than the speed of light) electromagnetic waves are widely present in the space plasma with high frequencies. Here,we briefly introduce their generation mechanism—Cyclotron Maser Instability(CMI).
超光速(相速度大于光速)电磁波是广泛存在于空间等离子中的高频电磁波,总结了超光速电磁波的产生机制——回旋微波激射不稳定性,介绍了超光速波在地球磁层中的传播特性,分析了其从高纬极光源区传播到低纬区域的基本原因:磁暴时由于等离子层顶压缩,超光速波传播时不会遇上反射,从而能向下传播。
光速
光速
喇叭线传导的速度可达到 98%的光速（ speed of light）， Valhalla 为 96%。
光速（velocity of light）和光速率（speed of light）是两个根本不同的概念﹐不应把它们混为一谈。
...光的速度（Speed of Light）是一款超越了一切速度的光速敏捷游戏。游戏是在一个十分酷炫的画面中进行的，你要做的就是点击那些蓝色的按钮，将它们击碎。
【益智休闲】光速过关(Speed of Light),Android手机游戏讨论区论坛...
Even if ET has mastered building a rocket that can travel at the speed of light, he may be lying dead inside a weakened craft .
即使外星人已经掌握了制造一枚能以光速飞行的火箭的技术，他也可能死在了一架飞船里。
Today people and goods travel by jet aircraft and fast ships, and information is transmitted at the speed of light over the Internet.
人和货物通过喷气式飞机和快船来流动，而信息是通过互联网以光的速度传送。
If you could move at the speed of light, your time would stand still, if you could move faster than light, your time would move backward.
如果你能以光速运动，你的时间就会静止不动；如果你能以快于光速的速度运动，你的时间就会倒退。
Super-fast Internet connections let people watch movies and send huge amounts of information at the speed of light.
VOA : special.2010.09.01
And then we have c, the speed of light, 2.998 times 10 to the 8 meters per second.
然后我们知道光速等于，2，998乘以10的8次方米每秒。
化学原理课程节选 : 麻省理工公开课
And so when you actually have a device the bits don't flow at the speed of light in reality.
因此，当你拥有一个设备,数据位并不能以现实中的光速传输。
计算机科学课程节选 : 哈佛公开课
It involves the relationship of energy, mass and the speed of light, written as the letter c.
VOA : special.2010.07.16
We're in a more inter-connected world, more travel, news and rumours spread at the speed of light.
Large transactions have been hurtling around the globe at the speed of light for years.
That show aired four nights a week and burned out a the speed of light.