Emisiospektri

Emisiospektri refers to the spectrum of light or other electromagnetic radiation that is emitted by a substance. When atoms or molecules absorb energy, their electrons can move to higher energy levels. As these electrons return to their lower, more stable energy levels, they release the excess energy in the form of photons. The specific wavelengths of these photons are characteristic of the element or molecule that emitted them. This pattern of emitted wavelengths creates a unique line or band spectrum, often referred to as an emission spectrum.

Each element has a distinct emission spectrum, making it a powerful tool for identification. By analyzing the wavelengths present in an emission spectrum, scientists can determine the elemental composition of a sample, whether it's a gas in a laboratory or a star in a distant galaxy. This principle is fundamental to various fields, including astronomy, chemistry, and physics. For instance, astronomers use the emission spectra of stars and nebulae to understand their temperature, composition, and motion. In chemistry, emission spectroscopy is used for quantitative and qualitative analysis of substances. The energy of the emitted photons corresponds directly to the energy differences between the electron orbitals within the atom or molecule.