Louis-Victor de Broglie was a French physicist born in 1892 who received the Nobel Prize in Physics in 1929 for his discovery of the wave nature of electrons. He introduced the theory that all matter has wave-like properties and particles can diffract and interfere like waves. De Broglie studied theoretical physics and earned his doctorate for his thesis on quantum theory. He proposed that particles are associated with waves and waves with particles, establishing the principle of wave-particle duality. De Broglie's theory of electron matter waves was instrumental in the development of quantum mechanics.

1. Birth - August 15, 1892 (Dieppe, France)
Death - March 19, 1987 (Paris, France)

2. Awarded Nobel Prize in Physics (1929) -
Discovery of the Wave Nature of Electrons (Wave-Particle Duality)
~Introduced theory of electron waves -
Doctoral thesis: “Researches on the quantum theory”
“Having much more the state of mind of a pure theoretician than that of
an experimenter or engineer, loving especially the general and
philosophical view, I was drawn towards the problems of atomic
physics…It was the conceptual difficulties which these problems raised;
it was the mystery which surrounded that famous Planck’s constant, h,
which measures the quantum of action; it was the disturbing and badly-
defined character of the dualism of waves and corpuscles, which
appeared to assert itself more and more in the realms of physics…”

3. ~Born in Dieppe, France
~”De Broglie” family name -
Derived from small town in Normandy, France
~Louis-Victor de Broglie -
2nd Son of French Nobility, Brother - Maurice
~Father: Victor, 5th duc de Broglie
~Mother: Pauline d’Armaille
~De Broglies achieved superior distinctions -
Politicians, Diplomats, Soldiers, 4 Marshals of France
~Never married throughout life

4. ~Educated by private tutors at home -
Until Father’s death (1906)
~Sent to Lycee Janson de Sailly for 3 years -
Completed Secondary School education (1909)
~Advanced to University of Sorbonne -
Graduated with history degree (1910)
~Studied theoretical physics at University of Sorbonne at 18 years of age -
Originally intended to be involved in Diplomatic Service

5. ~Active in Wireless Telegraphy during World War I -
Served in station at the Eiffel Tower
~Professor of Theoretical Physics at Henri Poincare
Institute (1928)
~Permanent Secretary to French Academy of Sciences
(1933)
~Elected to literary Academy of France
~Elected foreign associate of the US National Academy of
Sciences
~Elected foreign member of the Royal Society of London
~Elected foreign member of British Royal Society
~Became 7th duc de Broglie after Maurice’s death

6. ~Influenced by Planck’s studies and Einstein’s proposals regarding
wavelengths composition of particles and the particle nature of light -
De Broglie proposed Wave-Particle Duality -
Particles behave as waves and waves behave as particles
~Distance between two successive crests of De Broglie wave -
De Broglie wavelength
~De Broglie’s theory of electron matter waves -
Used by Erwin Schrodinger to construct wave mechanics
~Established center at Henri Poincare Institute for applied mechanics -
Researched optics, cybernetics, atomic energy
~Wrote at least 25 books -
Waves and Motions (1926), Wave Mechanics (1928), Non-linear Wave
Mechanics: A Casual Interpretation (1960), etc.

7. ~Nobel Prize in Physics (1929) -
Swedish Academy of Sciences
~Henri Poincare Medal (1929) -
Academie des Sciences
~Albert I of Monaco Prize (1932) -
Academie des Sciences
~Kalinga Prize (1952) -
United Nations Economic and Social Council
~Gold Medal (1956) -
French National Scientific Research Centre
~Grand Cross of the Legion d’Honneur
~Officer of the Order of Leopold of Belgium
~Honorary membership of 18 Academies and Learned Societies

8. ~Quantum Physics
~Wave-Particle
Duality

9. http://www.biographybase.com/biography/de_Broglie_Louis_Victor.html
http://www.britannica.com/EBchecked/topic/80727/Louis-Victor-7e-duc-de-Broglie
http://nobelprize.org/nobel_prizes/physics/laureates/1929/broglie-bio.html
http://www.vigyanprasar.gov.in/scientists/LdBroglie.htm
http://www.suite101.com/content/louis-de-broglie-physicist-a48213
http://biography.yourdictionary.com/louis-victor-pierre-raymond-de-broglie
http://www-groups.dcs.st-and.ac.uk/~history/Biographies/Broglie.html
http://4.bp.blogspot.com/_EZWNQhIJDqs/SdNWrbrZ3CI/AAAAAAAABkg/7ClfVd9XmhU/s400/Atom+diagram+observer.
jpg
http://www.blacklightpower.com/theory/DoubleSlit/Fig_37-
4_Two_Slit_Duality.jpg
http://plus.maths.org/issue43/features/noncom/diagram.gif
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