| spectrum |
A short-hand reference to the ELECTROMAGNETIC SPECTRUM.
출처: www.adec.edu/tag/glossary.html
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| spectrum |
A frequency distribution of observed counts as a function of detector channels. For low-resolution spectra, the detector channels are PHA or PI (mapped onto photon energy space via the RMF). For high-resolution grating spectra, the detector channels are wavelengths derived from pixel location.
출처: hea-www.harvard.edu/AstroStat/astrojargon.html
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| spectrum |
Spectra is the plural of spectrum, which is a series of energies (like light) arranged according to wavelength, or frequency. The electromagnetic spectrum is an array of radiation that is divided into a number of sub-portions, where the boundaries are only vaguely defined. They extend from the shortest cosmic rays, through gamma rays, X-rays, ultraviolet light, visible light, infrared radiation, microwave and all other wavelengths of radio energy.
출처: lasp.colorado.edu/cassini/inst_desc/glossary.htm
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| spectrum |
A range of frequencies available for over-the-air transmission.
출처: www.hdtvinfoport.com/HDTV-Glossary.html
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| spectrum |
The band of colors, from violet through red, obtained by passing white light through a prism (or another device that spreads light out into its component colors). Astronomical "spectroscopy,'' the study of the spectra of astronomical objects, is a very powerful tool in determining many characteristics of stars, nebulae, etc., since details of their spectra can reveal the materials they're made of and many of the physical conditions (temperature, pressure, and so on) within them.
출처: www.astrosociety.org/education/publications/tnl/14...
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