Word: lasered
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...appalled to read in the article on lasers [Jan. 12] that in addition to repairing retinal detachments as a medical usage, lasers were also used to remove cataracts. I have spent a number of hours over the past several years explaining to patients that lasers are not used in the removal of cataracts. In fact, the presence of a cataract many times precludes using the laser in treatment of diseases of the back of the eye, since the laser beam will not penetrate a dense cataract...
...thing. Jane's Yearbooks, London publisher of the authoritative guides to weapons systems, and the influential U.S. publication Aviation Week & Space Technology report that American and Russian scientists are stepping up efforts to develop weapons that until recently existed only in science fiction. They all depend on the laser, a device capable of generating a beam of light so powerful it can serve as a death...
...laser (the word is an acronym for light amplification by stimulated emission of radiation) has been around since 1960, when scientists first succeeded in producing the powerful beams of single-frequency light waves. These beams could be delivered to distant points with much less diffusion and loss of intensity than ordinary beams, which consist of the helter-skelter waves of white light. In recent years, using light generated by gases or chemical reactions, researchers have greatly increased both the power and range of lasers...
...researchers are seriously considering lasers as antipersonnel weapons; there are easier and cheaper ways to kill individual enemy soldiers. But more effective laser applications are under intensive investigation. Most laser research is highly classified, but Army authorities are known to be testing a tank-mounted high-energy laser...
Philips-MCA's laser system has an added attraction. By letting the laser beam circle over the same portion of track, the player can freeze a single frame (it takes one revolution to make one picture). It can also run the images in slow motion and even go backward with only the push of a button-all potentially valuable features for educational programs. Each competitor is convinced that its approach is superior. But about one point there is no disagreement: either system could signal a major change in home entertainment habits...