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spectra - 搜索 词典 2 The team studied the spectra, or chemical signatures, of the light from 146 white dwarfs located within a few hundred light-years of Earth 研究 小组 研究 了 光谱， 即 光线 的 化学 特征。 光线 来自 146 颗 白矮星， 它们 位于 距 地球 几百 光年 的 范围 之内。
Spectrum - Wikipedia A spectrum (pl : spectra or spectrums) is a set of related ideas, objects, or properties whose features overlap such that they blend to form a continuum [1] The word spectrum was first used scientifically in optics to describe the rainbow of colors in visible light after passing through a prism
Spectroscopy 101 – Types of Spectra and Spectroscopy - Science@NASA We can therefore use spectra—the detailed patterns of colors—to figure out things like exactly how hot something is and exactly what elements and compounds it is made of, without ever sampling it directly
Spectrum | Definition, Examples, Facts | Britannica Spectrum, in physics, the intensity of light as it varies with wavelength or frequency An instrument designed for visual observation of spectra is called a spectroscope, and an instrument that photographs or maps spectra is called a spectrograph Learn more about spectra in this article