## ✎ About Louis de Broglie

Who is it?: Physicist
Birth Day: August 15, 1892
Birth Place: Dieppe, French
Died On: 19 March 1987(1987-03-19) (aged 94)\nLouveciennes, France
Birth Sign: Virgo
Alma mater: University of Paris (ΒΑ in History, 1910; BA in Sciences, 1913; PhD in physics, 1924)
Known for: Wave nature of electrons De Broglie–Bohm theory de Broglie wavelength
Awards: Nobel Prize in Physics (1929) Kalinga Prize (1952)
Fields: Physics
Institutions: University of Paris (Sorbonne)
Thesis: Recherches sur la théorie des quanta("Research on Quantum Theory") (1924)
Doctoral students: Cécile DeWitt-Morette Bernard d'Espagnat Jean-Pierre Vigier Alexandru Proca Marie-Antoinette Tonnelat

# Louis de Broglie Net Worth

Louis de Broglie was born on August 15, 1892 in Dieppe, French, is Physicist. Louis de Broglie was an eminent French physicist who predicted the wave nature of electrons and suggested that all matter has wave properties. This concept forms the core of the quantum mechanics and for his groundbreaking contribution to quantum theory, de Broglie won the Nobel Prize for Physics in 1929. Born in an aristocratic family, Broglie along with his brother defied the family tradition of serving as diplomats by taking up science. Interestingly, Broglie’s first love was history but he was soon enticed by the mysteriousness of science and made his foray into the subject. While doing research for his PhD thesis he unearthed the wave nature of electrons, thus leading to the discovery of a new field of physics, wave mechanics. Throughout his life, he held important academic positions including seat 1 of the Académie française, and as the Perpetual Secretary of the French Academy of Sciences. He made major contribution in fostering international scientific co-operation. In his life, de Broglie was recognized by prestigious institutions and was awarded with highly-esteemed honours
Louis de Broglie is a member of Scientists

## Famous Quotes:

When Boltzmann and his continuators developed their statistical interpretation of Thermodynamics, one could have considered Thermodynamics to be a complicated branch of Dynamics. But, with my actual ideas, it's Dynamics that appear to be a simplified branch of Thermodynamics. I think that, of all the ideas that I've introduced in quantum theory in these past years, it's that idea that is, by far, the most important and the most profound.

## Biography/Timeline

1914

De Broglie had intended a career in humanities, and received his first degree in history. Afterwards, though, he turned his attention toward mathematics and physics and received a degree in physics. With the outbreak of the First World War in 1914, he offered his services to the army in the development of radio communications.

1924

In the second part of his 1924 thesis, de Broglie used the equivalence of the mechanical principle of least action with Fermat's optical principle: "Fermat's principle applied to phase waves is identical to Maupertuis' principle applied to the moving body; the possible dynamic trajectories of the moving body are identical to the possible rays of the wave." This equivalence had been pointed out by Hamilton a century earlier, and published by him around 1830, in an era where no experience gave proof of the fundamental principles of physics being involved in the description of atomic phenomena.

1925

The 1925 pilot-wave model, and the wave-like behaviour of particles discovered by de Broglie was used by Erwin Schrödinger in his formulation of wave mechanics. The pilot-wave model and interpretation was then abandoned, in favor of the quantum formalism, until 1952 when it was rediscovered and enhanced by David Bohm.

1929

De Broglie won the Nobel Prize for Physics in 1929, after the wave-like behaviour of matter was first experimentally demonstrated in 1927.

1934

This theory, which dates from 1934, introduces the idea that the photon is equivalent to the fusion of two Dirac neutrinos.

1944

De Broglie became a member of the Académie des sciences in 1933, and was the academy's perpetual secretary from 1942. He was asked to join Le Conseil de l'Union Catholique des Scientifiques Francais, but declined because he was non-religious and an atheist. On 12 October 1944, he was elected to the Académie française, replacing Mathematician Émile Picard. Because of the deaths and imprisonments of Académie members during the occupation and other effects of the war, the Académie was unable to meet the quorum of twenty members for his election; due to the exceptional circumstances, however, his unanimous election by the seventeen members present was accepted. In an event unique in the history of the Académie, he was received as a member by his own brother Maurice, who had been elected in 1934. UNESCO awarded him the first Kalinga Prize in 1952 for his work in popularizing scientific knowledge, and he was elected a Foreign Member of the Royal Society on 23 April 1953.

1950

In his later career, de Broglie worked to develop a causal explanation of wave mechanics, in opposition to the wholly probabilistic Models which dominate quantum mechanical theory; it was refined by David Bohm in the 1950s. The theory has since been known as the De Broglie–Bohm theory.

1960

Louis de Broglie was born to a noble family in Dieppe, Seine-Maritime, younger son of Victor, 5th duc de Broglie. He became the 7th duc de Broglie in 1960 upon the death without heir of his older brother, Maurice, 6th duc de Broglie, also a Physicist. He never married. When he died in Louveciennes, he was succeeded as duke by a distant cousin, Victor-François, 8th duc de Broglie.

1961

In 1961 he received the title of Knight of the Grand Cross in the Légion d'honneur. De Broglie was awarded a post as counselor to the French High Commission of Atomic Energy in 1945 for his efforts to bring industry and science closer together. He established a center for applied mechanics at the Henri Poincaré Institute, where research into optics, cybernetics, and atomic Energy were carried out. He inspired the formation of the International Academy of Quantum Molecular Science and was an early member.

1998

where ${\displaystyle \lambda }$ is the wavelength, ${\displaystyle h}$ is the Planck constant, ${\displaystyle p}$ is the momentum, ${\displaystyle m}$ is the rest mass, ${\displaystyle v}$ is the velocity and ${\displaystyle c}$ is the speed of light in a vacuum."

2013

That idea seems to match the continuous–discontinuous duality, since its dynamics could be the limit of its thermodynamics when transitions to continuous limits are postulated. It is also close to that of Leibniz, who posited the necessity of "architectonic principles" to complete the system of mechanical laws.

2014

It shows that the movement of the center of gravity of these two particles obeys the Maxwell equations—that implies that the neutrino and the photon both have rest masses that are non-zero, though very low.