Louis de Broglie was a French physicist who made significant contributions to the development of quantum mechanics. He is best known for his theory of wave-particle duality, which states that all particles, including electrons and atoms, exhibit both wave-like and particle-like properties.

De Broglie proposed his theory in his 1923 doctoral thesis, "On the Quantum Theory of the Electron," in which he suggested that the behavior of particles could be explained by considering them to be wave-like entities with a wavelength that is inversely proportional to their momentum. This idea was based on the principles of wave-particle duality, which had been previously introduced by Einstein in his theory of the photoelectric effect.

De Broglie's theory was revolutionary at the time and helped to pave the way for the development of wave mechanics, which is a fundamental part of quantum mechanics. It also helped to explain many of the strange and seemingly paradoxical behaviors of particles that had previously been observed in experiments, such as the behavior of electrons in atoms.

In addition to his work on wave-particle duality, de Broglie also made significant contributions to the development of quantum mechanics through his work on the SchrĂ¶dinger equation, which is a fundamental equation in quantum mechanics that describes the behavior of particles.

De Broglie's contributions to the field of physics were recognized with the Nobel Prize in Physics in 1929. His theory of wave-particle duality remains an important part of modern physics and continues to be studied and developed by physicists today.

## Louis Broglie and the Idea of Wave

Studies in History and Philosophy of Science Part A. Cushing, Quantum Mechanics: Historical Contingency and the Copenhagen Hegemony 1994 discusses "the hegemony of the Copenhagen interpretation of quantum mechanics" over theories like Bohmian mechanics as an example of how the acceptance of scientific theories may be guided by social aspects. In de Broglieâ€”Bohm theory, the velocities of the particles are given by the wavefunction, which exists in a 3 N-dimensional configuration space, where N corresponds to the number of particles in the system; The wavefunction itself, and not the particles, determines the dynamical evolution of the system: the particles do not act back onto the wave function. All physical objects, small or large, have an associated matter wave as long as they remain in motion. De Broglie concluded that most particles are too heavy to observe their wave properties. This lesson will examine the experiments and theories of Louis de Broglie that led to his groundbreaking contributions while also exploring his personal life. Basic physical quantities, such as the self-energy of the electron, the energy shift of electron states due to the presence of the electromagnetic field, gave infinite, divergent contributionsâ€”a nonsensical resultâ€”when computed using the perturbative techniques available in the 1930s and most of the 1940s.

## What is de Broglie's theory?

Miller, Early Quantum Electrodynamics: A Sourcebook, Cambridge University Press, 1995, p. He left France only a handful of times in his life: once to Stockholm to receive the Nobel Prize; three times to Brussels for the Solvay Conferences; and once to England. His work was so successful that it was later recognized by the French government, who awarded him the Legion of Honour in 1920. He called this wave as standing wave. Experimental results agree with all of quantum mechanics' standard predictions insofar as it has them. She has a Ph. Quantum mechanics is the study of the physics of the behavior of particles at the atomic and subatomic level.

## History of quantum field theory

As a boy, ''his gaiety filled the house,'' according to his sister, Pauline. For this reason, it is proper to submit periodically to a very searching examination, principles that we have come to assume without any more discussion. Germer performed a series of electron-scattering experiments that clearly showed that electrons do behave like waves. Springer Science and Business Media LLC. Oxford University Press OUP. In this thesis 1924 de Broglie developed his revolutionary theory of electron waves, which he had published earlier in scientific journals.

## 10 fun and interesting Louis Victor de Broglie facts

This lesson will examine the experiments and theories of Louis de Broglie that led to his groundbreaking contributions while also exploring his personal life. Thus, to define particle trajectories, one needs an additional rule that defines which space-time points should be considered instantaneous. Annual Review of Fluid Mechanics. Louis Victor Pierre Raymond de Broglie was a French physicist whose work was key to the scientific gains made the first half of the 20th century, a time of unprecedented discovery. Asked to join Le Conseil de l'Union Catholique des Scientifiques FranĂ§ais, Louis declined because, he said, he had ceased the religious practices of his youth. This equation describes a probability flow along a current. This is known as wave-particle duality.

## 6.6: De Broglieâ€™s Matter Waves

Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences. Their analysis also convinced most physicists that any notion of returning to a fundamental description of nature based on classical field theory, such as what Einstein aimed at with his numerous and failed attempts at a classical Fields had to be quantized. It was there that he took a strong interest in the technicality of physics. In de Broglie's model any orbit in which an integer number of wavelengths fit are allowed. The main reference is "The Undivided Universe" Bohm, Hiley 1993.

## Louis de Broglie Biography & Experiments

He never owned a car, preferring to walk and sometimes take the MĂ©tro. Maurice was well-connected with the leading scientists of the day and served as a Secretary of the 1911 Solvay Conference in Brussels, the subject of which was The Theory of Radiation and Quanta. The evolution of the universal wavefunction can become such that the wavefunction of the system appears to be in a superposition of distinct states. In contrast, electron will emit the energy when it moves from higher orbit to lower orbit. The situation is thus analogous to the situation in classical statistical physics.

## De Broglie

After earning his doctorate of physics at the Sorbonne, he was appointed to professor of theoretical physics there. Foundation of Louis de Broglie English translation by A. He mentioned that electrons create the waves in certain orbital around the nucleus. Even though de Broglie's experiment was published in 1924, it was not proven true until 1927 by Davisson and Germer. Louis obtained a degree in history at the distinguished Sorbonne University in France in 1910 but soon his attention turned to the natural sciences, obtaining a degree in physics in 1913. The notion that matter on the atomic scale might have the properties of a wave was rooted in a proposal Einstein had made 20 years before. He was buried at CimetiĂ¨re de Neuilly-sur-Seine, Neuilly-sur-Seine, France.