What are atomic line spectra?

Atomic line spectra are unique patterns of light emitted or absorbed by atoms when electrons transition between energy levels. Each element produces a distinct set of wavelengths, resulting in specific lines in a spectrum, which can be observed using a spectroscope. These spectra serve as fingerprints for elements, allowing scientists to identify the composition of materials in stars and other celestial bodies. They are crucial in fields like astrophysics and chemistry for understanding atomic structure and interactions.