Deslandres table

Deslandres table is a method used in spectroscopy to record and analyze the spectral lines of atoms and molecules. Named after its inventor, French physicist Henri-Alexandre Deslandres, this table is a significant tool in the field of atomic physics and molecular physics.

Overview

The Deslandres table is a graphical representation of the spectral lines produced by the emission spectrum of an atom or molecule. It is used to identify the energy levels of the electrons in the atom or molecule, and thus provides valuable information about its structure and properties.

The table is constructed by plotting the wavelengths of the spectral lines against their order of appearance in the spectrum. Each row in the table corresponds to a series of spectral lines, and each column corresponds to a particular order. The intersection of a row and a column gives the wavelength of the spectral line corresponding to that series and order.

Applications

The Deslandres table is widely used in the analysis of spectral data in various fields of science and technology. In astronomy, it is used to determine the chemical composition of stars and other celestial bodies. In chemistry, it is used to study the structure of molecules and the nature of chemical reactions. In physics, it is used to investigate the properties of atoms and the interactions between light and matter.

See also

• Spectroscopy
• Emission spectrum
• Atomic physics
• Molecular physics