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SPECTRUM EVOLUTION: MULTISPECTRAL IMAGING MOVES FROM MILITARY TO THE MASSES

机译:光谱演化:多光谱成像从军事发展到大规模

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摘要

Multispectral imaging obtains information from several bands of the electromagnetic spectrum to reveal a wealth of information, enabling differentiation of objects that cameras cannot. We can credit astronomers for laying the foundation of multispectral imaging (MSI) technology, perhaps starting with the well-known prism experiments of Isaac Newton in the late 1600s, followed by the experiments of German astronomer William Herschel. In 1800 Herschel was surprised to find that a thermometer held just outside the visible red part of the spectrum was warmer than that of visible light. American astronomer Samuel Pierpont Langley invented the first bolometer in the late 1800s to measure thermal radiation in the infrared (IR) part of the spectrum more sensitively. He used a telescope along with his platinum foil bolometer instrument to measure how much solar energy reaches the Earth at far infrared (FIR) and sub-mm wavelengths.
机译:多光谱成像从电磁光谱的多个波段中获取信息,以揭示大量信息,从而实现相机无法区分的物体。我们可以称赞天文学家为多光谱成像(MSI)技术奠定了基础,也许始于1600年代后期著名的艾萨克·牛顿的棱镜实验,然后是德国天文学家William Herschel的实验。 1800年,赫歇尔惊讶地发现,一个光谱仪的可见红色部分之外的温度计比可见光的温度更高。美国天文学家塞缪尔·皮尔蓬特·兰利(Samuel Pierpont Langley)于1800年代后期发明了第一台辐射热计,用于更灵敏地测量光谱中红外(IR)部分的热辐射。他用望远镜和铂箔测辐射热仪一起测量了远红外(FIR)和亚毫米波长下到达地球的太阳能量。

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