Jean Cabannes was a French

France

The French Republic , The French Republic , The French Republic , (commonly known as France , is a unitary semi-presidential republic in Western Europe with several overseas territories and islands located on other continents and in the Indian, Pacific, and Atlantic oceans. Metropolitan France...

 physicist

Physicist

A physicist is a scientist who studies or practices physics. Physicists study a wide range of physical phenomena in many branches of physics spanning all length scales: from sub-atomic particles of which all ordinary matter is made to the behavior of the material Universe as a whole...

 specialising in optics

Optics

Optics is the branch of physics which involves the behavior and properties of light, including its interactions with matter and the construction of instruments that use or detect it. Optics usually describes the behavior of visible, ultraviolet, and infrared light...

.

From 1910 to 1914 Cabannes worked in the laboratory of Charles Fabry

Charles Fabry

Maurice Paul Auguste Charles Fabry FMRS was a French physicist.-Life:Fabry graduated from the Ecole Polytechnique in Paris and received his doctorate from the University of Paris in 1892, for his work on interference fringes, which established him as an authority in the field of optics and...

 in Marseille on the topic launched by Lord Rayleigh at the end of the 19th century of how gas

Gas

Gas is one of the three classical states of matter . Near absolute zero, a substance exists as a solid. As heat is added to this substance it melts into a liquid at its melting point , boils into a gas at its boiling point, and if heated high enough would enter a plasma state in which the electrons...

 molecule

Molecule

A molecule is an electrically neutral group of at least two atoms held together by covalent chemical bonds. Molecules are distinguished from ions by their electrical charge...

s diffused light

Light

Light or visible light is electromagnetic radiation that is visible to the human eye, and is responsible for the sense of sight. Visible light has wavelength in a range from about 380 nanometres to about 740 nm, with a frequency range of about 405 THz to 790 THz...

. In 1914 he showed that pure gases could scatter light. This was published in Comptes Rendus in 1915. (Please see reference.) His career was then interrupted for five years by World War I

World War I

World War I , which was predominantly called the World War or the Great War from its occurrence until 1939, and the First World War or World War I thereafter, was a major war centred in Europe that began on 28 July 1914 and lasted until 11 November 1918...

.

In 1919 Cabannes returned to Fabry's laboratory to complete his thesis, after which he moved to Montpellier

Montpellier

-Neighbourhoods:Since 2001, Montpellier has been divided into seven official neighbourhoods, themselves divided into sub-neighbourhoods. Each of them possesses a neighbourhood council....

, and later on to Paris

Paris

Paris is the capital and largest city in France, situated on the river Seine, in northern France, at the heart of the Île-de-France region...

. In 1925 he and Jean Dufay calculated the height of the ozone

Ozone

Ozone , or trioxygen, is a triatomic molecule, consisting of three oxygen atoms. It is an allotrope of oxygen that is much less stable than the diatomic allotrope...

 layer. J. Cabannes, P. Daure and Y. Rocard

Yves Rocard

Yves-André Rocard was a French physicist who helped develop the atomic bomb for France.After obtaining a double doctorate in mathematics and physics he was awarded the professorship in electronic physics at the École normale supérieure in Paris.As a member of a Resistance group during the Second...

 were among the scientists who, in 1928, discovered that gases diffusing monochromatic light could also change their wavelength (the Cabannes-Daure effect).

This was identified independently by C. V. Raman and K. S. Krishnan in liquids, and by G. S. Landsberg

Grigory Landsberg

Grigory Samuilovich Landsberg was a Soviet physicist.Grigory S. Landsberg is a co-discoverer of inelastic combinatorial scattering of light used now in Raman spectroscopy. His major scientific contributions were in the fields of optics and spectroscopy....

 and L. I. Mandelstam in crystals. Cabannes was among the candidates for the Nobel Prize in Physics

Nobel Prize in Physics

The Nobel Prize in Physics is awarded once a year by the Royal Swedish Academy of Sciences. It is one of the five Nobel Prizes established by the will of Alfred Nobel in 1895 and awarded since 1901; the others are the Nobel Prize in Chemistry, Nobel Prize in Literature, Nobel Peace Prize, and...

 of 1929 (proposed by C. Fabry), which was awarded to de Broglie.

The 1930 prize went to Raman who gave the complete explanation of the effect now bearing his name, using quantum mechanics

Quantum mechanics

Quantum mechanics, also known as quantum physics or quantum theory, is a branch of physics providing a mathematical description of much of the dual particle-like and wave-like behavior and interactions of energy and matter. It departs from classical mechanics primarily at the atomic and subatomic...

.

The lunar

Moon

The Moon is Earth's only known natural satellite,There are a number of near-Earth asteroids including 3753 Cruithne that are co-orbital with Earth: their orbits bring them close to Earth for periods of time but then alter in the long term . These are quasi-satellites and not true moons. For more...

 crater Cabannes

Cabannes (crater)

Cabannes is a lunar impact crater that lies in the southern hemisphere on the far side of the Moon. The rim has been worn by subsequent impacts, with a smaller crater overlying the southern rim...

was named after him.