Absorptsioonspektri

Absorptsioonspektri is a term used in spectroscopy to describe the spectrum of wavelengths of electromagnetic radiation that a substance absorbs. When light or other radiation passes through a material, certain wavelengths are absorbed by the atoms or molecules within that material. The wavelengths that are not absorbed are transmitted or reflected. An absorptionspektri is a plot or representation of which wavelengths are absorbed and to what extent.

The unique pattern of absorption at specific wavelengths is characteristic of each element or compound. This is because atoms and molecules have discrete energy levels. When a photon of electromagnetic radiation with energy matching the difference between two energy levels strikes an atom or molecule, that photon can be absorbed, causing the atom or molecule to transition to a higher energy state. The wavelengths of light corresponding to these energy differences form the absorption spectrum.

Absorptsioonspektri are invaluable tools in various scientific fields. In chemistry, they are used for identifying and quantifying substances. For example, in analytical chemistry, the presence and concentration of a specific chemical can be determined by analyzing its absorption spectrum. In astronomy, the absorption spectra of stars and other celestial objects reveal their chemical composition, temperature, and even their motion through space. The study of these spectra has been fundamental to our understanding of the universe.