Humanity has been trying to use the sun's light as a reliable source of energy for centuries.

几个世纪以来，人类一直试图利用太阳的光作为可靠的能源。

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One source of error is refraction, the bending of light beams as they pass through air layers of different temperature and pressure.

误差的一个来源是折射，即光束通过不同温度和压力的空气层时发生的弯曲现象。

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It would seem sensible to seek the source of these in the universe's most conspicuous energy factories: quasars and gamma-ray bursts billions of light-years away from Earth.

在宇宙中最引人注目的能量工厂——距离地球数十亿光年的类星体和伽马射线爆发——中寻找这些物质的来源似乎是明智的。

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Intensity, if we increase the intensity, we're not increasing the energy in each photon, we're just increasing the number of photons that we're shooting out of our laser, whatever our light source is.

强度，如果我们增加强度，我们增加的不是,每个光子的能量，我们增加的仅仅是,从我们激光源射出的光子数，无论我们的光源是什么。

麻省理工公开课 - 化学原理课程节选

So, we would expect to see electrons ejected with the UV light source.

所以，我们能够预测,可以看到电子被紫外光源射出。

麻省理工公开课 - 化学原理课程节选

Utilizing a light bulb as the light source, the light is reflected from a small DMD to the screen.

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Junior Seau was a source of light and life until injuries from football snuffed that out.

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