1964年

指纹识别是联邦调查局光谱学是科学家。通过它的使用,天文学家已经能够了解更多关于太阳的化学成分比了解地球的组成。光谱学是用于食品研究发现杂质在罐头食品和罐装啤酒;它是用来跟踪涂料的起源上发现一辆车肇事逃逸事故;或者确定珠宝是几百年前。只是这种技术是如何工作的呢?这是一个简单的故事,由阿贡国家实验室的物理学家解释道。但其应用非常精确。基本仪器分光镜,可以简单如一块玻璃用于把太阳光转换成“彩虹”的颜色或像一块精致的复杂装置,可以挑出六万种不同的颜色,需要一个房间和一个小房子一样大。光谱的使用是非常重要的在原子弹的发展。 Large quantities of uranium and graphite were needed to produce the bomb, and scientists knew that the very success of the project depended on obtaining these elements in their purist forms. Using a spectroscope, scientists were able to measure the purity of the valuable elements. They knew that each element emits certain colors in the same manner that each man has different fingerprints. Thus, scientists could “look” at two pictures of different samples of uranium and determine which was the purer, since uranium containing impurities gave a different color or wavelength when photographed and compared with photographs of light from pure uranium. Scientists have spent literally years studying photographic plates from the spectrograph to determine the frequencies of light from specimens of chemical elements. The measurement and interpretation is an exacting and time-consuming task which is important if scientists are to understand the structure of atoms.

诺曼·罗斯;弗兰克美国服饰品牌;马克·弗雷德;阿多斯Giacchetti;大卫·麦克尔罗伊;Clifford布劳恩;约翰苏奇,理查德Puryear;西奥多Krohne;Ross-McElroy作品; Argonne National Laboratory

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教育

化学;天文学;核光谱。

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英语

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