a beam of light

基本解释

Can we skirt Einstein's theory of special relativity and travel faster than a beam of light?
我们能否绕过爱因斯坦狭义相对论的理论使得移动速度超越光速？
In a unit of The Way Things Work, they try to inhabit the minds of scientists devising a pathway for a beam of light to reach a target.
在“自然规律”的课程里，他们试着想科学家那样去思考来设计一套装置来控制光线的（折射反射）轨迹，最终使光线射向规定的目标。
And Grier should know: he designed his own tractor beam and built it, demonstrating for the first time that a beam of light can tug objects over long distances.
因为他设计并制造了他自己的牵引光束装置，并且用他的装置第一次证明了光束可以远距离拖动物体。

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.
So this gives you a little bit of an idea of just how many individual photons there are in a laser beam of light. This is a huge number of photons.
这个给你们一点思路关于,一个激光束有多少独立的光子,这是一个巨大的光子数目。
麻省理工公开课 - 化学原理课程节选

Channelling Grace Kelly, she inhabits the stage like a beam of light, rendering everyone else as hapless and transfixed as moths.
ECONOMIST: Two excellent productions of an enduring play
To measure the refractive indices of different parts of a cell they use a technique called interferometry, which involves splitting a beam of light in two.
ECONOMIST: Microscopy