Spectral range refers to the range of wavelengths within the electromagnetic spectrum that a particular research area or instrument is capable of detecting or measuring. This can include a specific range of wavelengths in the visible, ultraviolet, or infrared regions, depending on the research goals and applications. Researchers often use spectrometers or other equipment to study the spectral range of interest and gather information about the composition, structure, or properties of materials based on how they interact with electromagnetic radiation within that range. The spectral range is an important consideration in various fields such as astronomy, environmental science, and materials science.