To the astonishment of the entire world, the neutrinos clocked in 60 nanoseconds sooner than a light beam traveling the same distance would have done.

他们记录到的中微子的行驶时间要比光线行驶相同距离提早了60纳秒，从而使整个世界为之震惊。

Because light travels in a straight line through the contours of space-time, a light beam will curve where space-time curves, this curving was first measured in 1919.

因为光沿时空走直线，所以光线在时空弯曲的地方会弯曲。这现象在1919年首次被观测到。

When the laser hits the photovoltaic device, the photons in the light beam are converted to electricity in the same way that solar cells convert sunlight into electricity.

当镭射光击打到光电装置上，光束上的光电子就会转化为电能，就像太阳能电池板把太阳能转化为电能。

This intense heat they project in a parallel beam against any object they choose, by means of a polished parabolic mirror of unknown composition, much as the mirror of a lighthouse projects a beam of light.

VOA : special.2010.09.01

So, what we would expect is that there is a relationship between intensity in kinetic energy because it was understood that however intense the light was, if you had a more intense light, it was a higher energy light beam.

光强和能量之间,应该有一定的关系,因为在我们的理解中,不管光强是多少，光的强度越大,光束能量越高。

化学原理课程节选 : 麻省理工公开课

And this is a very fast speed, of course, it's about 700 million miles per hour. So, one way to put that in perspective is to think about how long it takes for a light beam to get from earth to the moon. Does anyone have any guesses? Eight seconds, that sounds good.

当然这是一个非常快的速度，它大约是每小时7亿英里,为了更形象化，我们,看看光从地球到月球,需要多少时间，你们猜猜是多少？,8秒，猜的不错。

化学原理课程节选 : 麻省理工公开课

That information leaves the phone traveling as a light beam moving through fiber optic networks.

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This technology relies upon a light beam that is shot at an angle through a sensing chamber to a receptor.

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His quest began in 1895, when as a 16-year-old he imagined what it would be like to ride alongside a light beam.

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