Fiftyyears ago this Sunday, Theodore Maiman and his fellow scientists atHughes Research Laboratory shined a high-power flash lamp on a rubyrod, triggering a beam of coherent light: the first laser.
50年前的这个星期天,休斯研究实验室的西奥多.梅曼和科学家用高功率闪光灯照射红宝石棒,引发光束相干: 第一台激光器 。
A gene linked to increased life span through calorie restriction also appears to play a critical role in boosting memory and brain power, according to a study published Sunday.
周日发布的一项研究表明:一个通过热量限制来增长寿命的基因似乎还对促进记忆和智力有关键作用。
An explosion rocked a natural-gas power plant Sunday in Middletown, Conn., sending earthquake-like shock waves miles away.
康涅狄格州米德尔敦一家天然气发电厂发生爆炸,形成如同地震一般的冲击波,影响达数英里。
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