The invention of the laser provided scientists with a stronger source of light and a push that could do useful work on Earth.

激光的发明给科学家们提供了一种强大的光源，同时也是地球上的一种能够产生有效功的推力。

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The primary application for the diode laser bar is as a pump light source for use in solid-state lasers for medical and industrial applications.

半导体激光器主要用做医用和工业用固体激光器的光源泵。

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One solution is to use a diffuse light source rather than a laser beam, says Mr O'Brien.

一个解决方案就是使用漫反射光源而不是激光，O'Brien先生说。

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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

Laser, light source and radiofrequency treatments.

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And since ultrasound travels in a tight line akin to laser light, the emergent tones are audible only in a narrow, cylindrical path from source to ear.

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