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optical spectra

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optical spectra [′äp·tə·kəl ′spek·trə]
(spectroscopy)
Electromagnetic spectra for wavelengths in the ultraviolet, visible and infrared regions, ranging from about 10 nanometers to 1 millimeter, associated with excitations of valence electrons of atoms and molecules, and vibrations and rotations of molecules.


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Some specific topics covered include phonon fluctuations, the spectrum of optical absorption coefficient and optical parameters in GSM, and optical spectra and morphology of a-Si:H and a-SiC:H films.
Since its discovery as a faint blue star in 1985, KPD 0005+5106 attracted much attention because optical spectra taken with ground-based telescopes suggested that this white dwarf is very hot.
We present the of a search for supernova remnants (SNRs) in the galaxy NGC 6946 using longslit optical spectra taken at the Kitt Peak 4-meter telescope.
 
 
 
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