comparison spectrum
Light (a spectrum formed alongside the spectrum under investigation, for purpose of measuring the wavelengths of unknown lines) तुलना पंक्ति, तुलना स्पेक्ट्रम
Light (a spectrum formed alongside the spectrum under investigation, for purpose of measuring the wavelengths of unknown lines) तुलना पंक्ति, तुलना स्पेक्ट्रम
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