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The visible region of the spectrum ranges from 400–700 nm, which corresponds to frequencies of 7 × 1014–4 × 1014 Hz. Radiation at the low-energy high-wavelength end of the spectrum is perceived as red, while that at the high-energy part of the spectrum is blue. The spectral region between 180–400 nm corresponds to the ultraviolet (UV) region.
KeywordsMolecular Orbital Molar Absorption Coefficient Atomic Orbital Instrumental Analysis Derivative Spectrum
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