"Louis De Broglie." Famous Scientists.


Theory of electron waves.
In this thesis (1924) Broglie developed his revolutionary theory of electron waves, which he had published earlier in scientific journals. (See de Broglie wave.) 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. Einstein had suggested that light of short wavelengths might under some conditions be observed to behave as if it were composed of particles, an idea that was confirmed in 1923. The dual nature of light, however, was just beginning to gain scientific acceptance when Broglie extended the idea of such a duality to matter. (See wave-particle duality.)
Broglie's proposal answered a question that had been raised by calculations of the motion of electrons within the atom. Experiments had indicated that the electron must move around a nucleus and that, for reasons then obscure, there are restrictions on its motion. Broglie's idea of an electron with the properties of a wave offered an explanation of the restricted motion. A wave confined within boundaries imposed by the nuclear charge would be restricted in shape and, thus, in motion, for any wave shape that did not fit within the atomic boundaries would interfere with itself and be canceled out. In 1923, when Broglie put forward this idea, there was no experimental evidence whatsoever that the electron, the corpuscular properties of which were well established by experiment, might under some conditions behave as if it were radiant energy. Broglie's suggestion, his one major contribution to physics, thus constituted a triumph of intuition.

"What Is the De Broglie Hypothesis?" About.

Quantum Physics: Louis de Broglie: Confirming de Broglie…

Quantum Theory: Louis de Broglie - Space and Motion

Some authors have felt that Einstein's huge fame was not entirely deserved, but calling hima is certainly not fair: Just like any other genius in history, Albert Einstein had to build on the work of his elders. Period.

Louis de Broglie, the Prince of Quantum - OpenMind

The whole may have been one of the reasons why was notmentioned in 1921 when Einstein was awarded the Nobel prize. Instead, Einstein was officially rewarded for his 1905 explanation of the laws ofthe photoelectric effect, which may be construed as a. In 1912 (the year Poincaré died) had even proposed that and share the Nobel prize for , because:


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Neither Einstein nor Poincaré ever quoted each other on the subject. Both, however, often cite (1853-1928) who put forth the relevant in 1899 and 1904,incorporating the so-called , which had beenproposed by (1851-1901) in 1889 (and, independently, by Lorentz himself in 1892) to explain the negative result of the of 1887. Lorentz himself credited (1851-1940) forfirst publishing the idea (in 1893).

The de Broglie Wave as Evidence of a Deeper Wave …

It all began in October 1927, at the Fifth Solvay Congress in Brussels. It was Louis de Broglie’s first congress, and he had been “full of pleasure and curiosity” at the prospect of meeting Einstein, his teenage idol. Now 35, de Broglie happily reported: “I was particularly struck by his mild and thoughtful expression, by his general kindness, by his simplicity, and by his friendliness.”

Louis de Broglie on Quantum Physics: ..

The symbol "c" for the speed of light ()was introduced in 1894 by a famous student of Voigt's, Paul Drude (1863-1906). Drude used "c" for electromagnetism, but in an optical context he retained the symbol "V"which had been introduced by James Clerk Maxwell. Einstein himself used "V" until 1907.

Louis de Broglie (In full:Louis ..

On 30 April 1905, Einstein completed his thesis, with Alfred Kleiner, Professor of Experimental Physics, serving as pro-forma advisor. That same year, which has been called Einstein's annus mirabilis (miracle year), he published four groundbreaking papers, on the photoelectric effect, Brownian motion, special relativity, and the equivalence of mass and energy, which were to bring him to the notice of the academic world. Einstein is often regarded as the father of modern physics and the most influential physicist of the 20th century. While best known for his mass–energy equivalence formula E = mc2 (which has been dubbed "the world's most famous equation"), he received the 1921 Nobel Prize in Physics "for his services to theoretical physics, and especially for his discovery of the law of the photoelectric effect". The latter was pivotal in establishing quantum theory.

Louis de Broglie - Biographical

10 years earlier (in 1887) (1850-1919) had proposed a coordinate transform which explained the Michelson-Morley result(and the )but featured an erroneous overall scale factor implying some asymmetry betweenthe stationary and the moving system, against principles. Yet, in hindsight, Voigt's idea of involving time as a coordinate was a key breakthrough. H.A. Lorentz and Voigt were in touch, but it took yearsfor Lorentz to adopt this viewpoint and find a with the desirable symmetry. Voigt also introduced modern into physics,a key element in Einstein's own .