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。
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。
Assume the speed of light is the same for both observers.
假设对于这两个观察员而言，光速是相同的。
Under special relativity, if something travels faster than the speed of light, it goes backwards in time.
根据狭义相对论，如果有什么东西比光速旅行得更快，它就会把时间向后推移。
Originally, Keeling measured the speed of light in the air samples with a laser beam.
起初，吉林用激光束测量光在这些空气样本中的传播速度。
Under Einstein's theory, the speed of light becomes a sort of ultimate speed limit.
根据爱因斯坦的理论，光的速度变成了一种终极的速度限制。
Since Einstein introduced special relativity, the theory and the special status it gives to the speed of light have appeared iron-clad.
自从爱因斯坦提出狭义相对论以来，这个理论和其把特殊地位赋给了光速，已经铁证如山。
It is so far from Earth that radio signals, traveling at the speed of light, take 16 hours to reach the spacecraft.
它与地球的距离如此之远，以致地球发出的无线电信号要以光速传播16个小时才能到达这部航天器。
That's shocking, because much of modern physics relies on Einstein's theory that the speed of light is the universe's speed limit.
那是十分令人震惊的，因为许多物理学家总是根据爱因斯坦的相对论，认为光速是宇宙速度的极限。
Since neutrinos have a tiny mass, the speed should be very close to the speed of light.
因为中微子的质量非常小，所以它的速度应该非常接近光速。
Nothing can escape a black hole's gravity because nothing can travel faster than the speed of light.
任何东西都不能逃脱黑洞的引力，因为没有任何东西的速度能超过光速。
Because nothing can theoretically travel faster than the speed of light, nothing escapes once it's passed the event horizon.
因为理论上没有任何物体的速度会快过光速，所以一旦进入视界，任何物体都不能逃离。
Which limits them to the speed of light and makes the possibility of their ever making contact pretty slim.
这限制了它们只能在光速执行旅行，这也让它们曾做出的交流尝试希望渺茫。
The area of physics which deals with speeds comparable to the speed of light is called relativity.
物理学领域中，处理相对于光速的速度问题的就是所谓相对论。
The planet is so far away, spaceships travelling close to the speed of light would take 20 years to make the journey.
这颗行星过于遥远，以接近光速飞行的宇宙飞船都要花费20年时间才能抵达。
As you reach the speed of light, relativity calculations indicate that an object's mass becomes infinite.
如果达到光速，根据相对论可以计算出这个物体的质量趋于无穷。
That innate drive to be recognized for our tastes has been accelerated to the speed of light by the network.
而这个识别自我温度的内在驱动器被网络那如光速般的速度加速了。
It will gradually catch up with this slow pulse, reducing the speed of light in the slow pulse's vicinity.
它会逐渐赶上这个更慢的脉冲，降低整个慢脉冲附近光的速度。
In other words, if these theories accurately describe nature, high-energy gamma rays travel slightly slower than the speed of light.
换句话说，如果这些学说完全切合实际情况的话，则高能伽马射线的传播速度要慢于光速。
It is impossible to travel faster than the speed of light, and certainly not desirable, as one's hat keeps blowing off.
不可能旅行得比光速更快，当然也不希望这样，因为你的帽子老是会被吹掉。
Radiation: composed of massless or nearly massless particles that move at the speed of light.
辐射：由以光速运行的无质量或近无质量粒子所构成。
Cherenkov light comes from these particles when the speed of light is exceeded.
切伦科夫光来自光速被超过时的这些粒子。
So they ran the test again - and broke the speed of light for a second time.
为了验证实验正确性，他们又一次进行了此项实验，并且第二次打破了光速。
Since the speed of light is well known, any delay in receiving the satellite's signal can be converted into a distance.
由于光速广为人知，接受卫星信号时的任何时间迟缓都能折算出距离的远近。
Since the speed of light is well known, any delay in receiving the satellite's signal can be converted into a distance.
由于光速为人熟知，接收卫星信号时的任何时间迟缓都能折算出距离的远近。
It is in fact the increase in the speed of light that affects this increase in spin.
实际上那是在以光的速度在加速而影响这个自旋。
It is in fact the increase in the speed of light that affects this increase in spin.
实际上那是在以光的速度在加速而影响这个自旋。
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