Neeldumisjoonte

Neeldumisjoonte, a term originating from Finnish, translates to "absorption lines" in English. These are specific wavelengths of light that are absorbed by a material as light passes through it. When a continuous spectrum of light, such as that emitted by a star or a hot gas, encounters a cooler gas, the atoms and molecules within that cooler gas will absorb photons of particular energies. These energies correspond to the electron transitions within those atoms or molecules.

The absorption lines appear as dark lines superimposed on the otherwise continuous spectrum. Each element and molecule has a unique set of absorption lines, acting like a fingerprint. By analyzing the pattern and position of these lines, scientists can determine the chemical composition of the absorbing material. For example, the spectrum of stars reveals the elements present in their atmospheres. Similarly, absorption lines in the light from distant galaxies can tell us about the composition of the gas clouds between us and those galaxies. The study of neeldumisjoonte is a fundamental technique in astrophysics and spectroscopy.