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UV–Vis–NIR "Optical"

X-ray and Gamma ray

Electron

Nucleon

Radiowave

Others

Data collection, processing	Fourier-transform spectroscopy Hyperspectral imaging Spectrophotometry Time-stretch Time-resolved spectroscopy Video spectroscopy
Measured phenomena	Acoustic resonance spectroscopy Circular dichroism spectroscopy Deep-level transient spectroscopy Dual-polarization interferometry Hadron spectroscopy Inelastic electron tunneling spectroscopy Scanning tunneling spectroscopy Photoacoustic spectroscopy Photothermal spectroscopy Pump–probe spectroscopy
Applications	Astronomical spectroscopy Force spectroscopy (a misnomer)