books spectra and rays
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# Infrared spectroscopy
# Near infrared spectroscopy
# UV spectroscopy
# Ultraviolet and visible spectroscopy
# X-ray spectra
# gamma ray spectrometer
# Visible and ultraviolet spectroscopy
# X-ray photoelectron spectroscopy
# beta ray spectrum
# gamma ray spectrum
# About ultraviolet and infrared spectra
# alpha spectrum
# atomic ray spectra
# Infrared spectroscopy and Raman spectroscopy
# Spectra of electromagnetic radiation and their properties
