Emission Spectra

Emission spectra are a type of spectral line formed by the emission of photons from atoms or molecules. These photons correspond to a specific energy level. When excited by heat, electrical discharge, radiation, or other energy source, electrons in the atom or molecule absorb energy and then re-emit the energy as photons, releasing visible light with a specific energy. This visible light can be seen in emission spectra. Emission spectra are useful in identifying atoms or molecules and studying the composition of different materials. Furthermore, the use of emission spectra can help astronomers observe distant stars, galaxies, and even our own Milky Way galaxy.