He shot light from a laser out the end of the cable onto the diaphragm.

他从一激光器射出光束，正对有电缆一端的振动膜上。

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If you do it the other way, it becomes a stylus tip and in another way, it becomes a laser pointer.

如果你以另一种方式转动它，它就变成一支触控笔，再换一种方式转动，它就变成一支激光笔。

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The Virginia Tech team put a laser sensor on the front of the car to look for activity in nearby areas.

VOA: special.2009.11.03

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

Also, what's the energy per photon of this red laser pointer, and then it's also worth trying a calculation dealing with intensity. So let's also try calculating the numbers of photons that would be emitted by this laser pointer, if, for example, we were to use it for 60 seconds and this were a one milliwatt laser.

同样，红色激光笔的,每个光子能量是多少，这也值得用处理强度的方法计算一下,让我们也计算一下,有多少光子会从这个激光笔射出，举个例子，如果我们使用它持续60秒,这里会有一毫瓦的激光。

麻省理工公开课 - 化学原理课程节选

"We excite the atoms to the Rydberg stage with a laser, " explained Dr Bendkowsky.

BBC: World first for strange molecule

The patent-pending technology uses a laser beam's energy to precisely transfer the ultra-thin chips.

BBC: US engineers develop smart RFID-enabled paper

The shift key pans a camera down, and the mouse controls a laser pointer.

WSJ: What Does It Say When a Robot Is the Life of a Party?