Emission spectroscopy

frequencies of light emitted by atoms or chemical compounds

thumb|right|A chemoluminescent reaction in an Erlenmeyer flask

physical constant

hydrogen spectral series

important atomic emission spectra

hydrogen spectral series of transitions

spectral line of hydrogen state transitions

Method using radiation to identify chemical elements in a sample.

surface-sensitive quantitative spectroscopic technique

energy measurement of electrons emitted from solids, gases, or liquids by the photoelectric effect

type of atomic emission spectroscopy

Analytical technique used for the spectrophotometric detection of chemical elements

quantities describing probability of absorption or emission of light

measure of spectral lines

Non-destructive elemental analysis technique

experimental technique to determine the distributions of electrons in solids

thumb|upright|The All-sky New Horizons Alice Lyα maps in ecliptic coordinates centered on the anti-Sun direction, and the lower map is in Galactic coordinates. The c. 90,000 stars in the M. A. Velez et al. (2024) catalog are overlaid as black dots, where the size of the dot is proportional to the logarithm of the expected Alice count rate from each star. The map in Galactic coordinates indicates the outlines of four of the important LISM clouds ("LIC", in red; "Aql" in green; "Blue", in blue; and "G", in tan). Lyman-alpha, typically denoted by Ly-α or Lyα, is a spectral line of hydrogen (

method used to count the number of X-rays of a specific wavelength diffracted by a crystal

measurement of kinetic energy spectra of photoelectrons emitted by molecules which have absorbed ultraviolet photons, in order to determine molecular orbital energies in the valence region

Microturbulence is a form of turbulence that varies over small distance scales. (Large-scale turbulence is called macroturbulence.)

Emission spectra characteristic of burning hydrocarbon fuels

principle of spectral lines

type of solar phenomenon

mass effects on spectroscopy

phenomenon in astronomical spectroscopy, named after Otto Struve and Jorge Sahade

Emission of secondary X-rays from a material excited by high-energy X-rays