The laser, with its beam of strong light, can drill a hole in a diamond, and yet can be so well controlled that it can be used in delicate eye operations.

凭着本身强烈的光束，激光可在钻石上钻一个洞，而且可以被很好地控制，因此能用于精密的眼部手术。

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This gives you a little bit of an idea of just how many individual photons there are in a laser beam of light.

这让你对一束激光中有多少个光子有了一点概念。

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This gives you a little bit of an idea of just how many individual photons there are in a laser beam of light.

这让你对一束激光中有多少个光子有了一点概念。

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Scientific American magazine says huge lasers turn only about twenty to thirty percent of the energy they use into a laser beam.

VOA: special.2010.09.01

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

So what we end up with for the number of photons in this laser beam of light is 2.1 times 10 to the 17 photons.

这个激光束的数目是,2，1乘以10的17次方。

麻省理工公开课 - 化学原理课程节选

In the researchers' new imaging system, a beam of infrared laser light is widely dispersed throughout a room.

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This generates the coherent light of a laser beam in the core of a long, thin optical fibre.

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All businesses could benefit from this level of laser beam focus to write their own success story HB Surround Sound will be crushing the soundtrack.

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