wavelength calibration

Wavelength calibration is a process used to ensure that the measurements from a spectrometer accurately correspond to specific wavelengths of light. When light passes through a spectrometer, it is separated into its component colors or wavelengths. Calibration involves comparing the spectrometer’s readings against known reference lines (from standard sources like calibration lamps), adjusting the instrument so that each recorded pattern matches the true wavelengths. This ensures precise identification and measurement of light’s spectral features, allowing scientists to accurately analyze materials, detect chemical compositions, or study astronomical objects based on the exact wavelengths observed.