Paul Dirac

Paul Dirac - Electrical Engineers, Career and Personal Life

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Paul Dirac's Personal Details

Paul Dirac was an English theoretical physicist known for his contributions to quantum mechanics and quantum electrodynamics

InformationDetail
BirthdayAugust 8, 1902
Died onOctober 20, 1984
NationalityBritish
FamousAtheists, Atheists/Agnostics, University Of Bristol, Engineers, Electrical Engineers, Mathematicians, Physicists
HobbiesGardening
SpousesMargit Wigner
Known asPaul Adrien Maurice Dirac, P. A. M. Dirac
Universities
  • University Of Bristol
  • University of Bristol
  • University of Cambridge
  • St John's College
  • Cambridge
Notable Alumnis
  • University Of Bristol
Birth PlaceBristol
ReligionAtheism
GenderMale
Sun SignLeo
Born inBristol
Famous asPhysicist
Died at Age82

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Paul Dirac's photo

Who is Paul Dirac?

Paul Adrien Maurice Dirac was an English theoretical physicist and one of the pioneers in quantum mechanics and quantum electrodynamics. He had an unhappy childhood, and in spite of possessing the ability to speak French, German and Russian, he was known for his long silences. He was particularly interested in mathematics and after hearing of Einstein, he got into advanced physics and visited Niels Bohr for research work. Soon he earned the admiration, respect and friendship of geniuses including Bohr, Heisenberg, and Gamow. Evidence of his proficiency comes from the fact that he proposed anti-matter only on the basis of his mathematical logic telling him that it must exist. He worked through the rise of the Nazi party in Europe, the repressions of Stalinist Russia, the World War II, the McCarthy era and the Cold War. A brilliant physicist who made invaluable contributions to science, he was an unusual man on the personal front. He was known for his taciturn nature and was outspoken in his criticism of others. The winner of several prestigious awards including the 1933 Nobel Prize for physics which he shared with Erwin Schrödinger, he had turned down a knighthood as he did not want to be addressed by his first name.

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Childhood & Early Life

Paul Dirac was born on August 8, 1902 in Bristol, England. His father, Charles Dirac, was a French teacher and his mother, Florence Hannah Dirac, worked in a library.

He had an elder brother, Reginald Felix, and a younger sister, Beatrice Marguerite. Their father was a strict disciplinarian and imposed the use of French language in the house.

After completing his school education in 1918 he studied electrical engineering at the University of Bristol on a scholarship and completed his degree in 1921. Even his first-class honours degree could not get him a job in those post World War I recession times.

He cleared the entrance examination for St John's College, Cambridge University and received a £70 scholarship. But as the overall costs of living and studying in Cambridge exceeded his budget, he gave up this opportunity.

The University of Bristol offered him a B.A. in Mathematics with no tuition fees, which he accepted. After graduating in 1923 with first class honours, he received a £140 scholarship from the Department of Scientific and Industrial Research.

Now equipped with enough finance, he went to Cambridge. For the next three years he worked under the supervision of Ralph Fowler and received a PhD in 1926. He continued his research in Copenhagen with Niels Bohr and became a fellow of St. John's College in 1927.

While going through Heisenberg's paper, Dirac noticed an analogy between the Poisson brackets of classical mechanics and Heisenberg's matrix formulation of quantum mechanics. He laid down these ideas in his doctoral thesis.

Career

In 1928, he postulated a relativistic equation of motion for the wave function of the electron which established a connection between relativity and quantum mechanics. This became his famous ‘Dirac Equation'.

The formulation of the equation led to another scientific revelation—the prediction of existence of positron (anti-particle to electron), in a theoretical model of the vacuum known as the 'Dirac Sea'.

His book 'Principles of Quantum Mechanics' published in 1930 consolidated the works on matrix mechanics and wave mechanics into a single mathematical formalism.

The book introduced the delta function and in the third edition (1939), he included the bra-ket notation which enabled it to be used universally.

Dirac was the Lucasian Professor of Mathematics at Cambridge from 1932 to 1969. During the World War II he directed the theoretical and experimental research on

In the 1950s, he found a way of putting the Tomonaga-Schwinger equation into the Schrodinger representation, while also giving explicit expressions for the scalar meson field, the vector meson field and the electromagnetic field.

He derived the anomalous magnetic moment "Schwinger term" and the Lamb shift using the Heisenberg picture, in 1963.

His 1964 publication 'Lectures on Quantum Mechanics' dealt with the constrained dynamics of nonlinear dynamical systems and he published a paper titled 'Quantization of the Gravitational Field' to the 1967 ICTP/IAEA Trieste Symposium.

In 1975, he gave a series of five lectures at the University of New South Wales, which were later published as a book titled 'Directions in Physics' in 1978. The royalties from the book were donated to the university, for the establishment of the Dirac Lecture Series.

Major Works

While working for his doctorate in the 1920s, he became one of early pioneers in quantum mechanics by submitting the first ever thesis on quantum mechanics to be submitted anywhere, and later he founded quantum electrodynamics.

In 1928 he derived the 'Spin-1/2 Dirac Equation' equation which predicted the existence of ‘antiparticles’, particles with the same mass as particles of ordinary matter but the opposite electric charge. He became the 'discoverer' of antimatter.

Awards & Achievements

Dirac and Erwin Schrodinger shared the 1933 Nobel Prize for Physics, a recognition "for the discovery of new productive forms of atomic theory'.

He received the Royal Medal in 1939. More praise and recognition came with the Copley Medal and the Max Planck Medal in 1952, and the inaugural J Robert Oppenheimer Memorial Prize in 1969.

He received honorary fellowships from the American Physical Society (1948) and the Institute of Physics, London (1971).

Personal Life & Legacy

Dirac married Margit Wigner in 1937. He adopted Margit's two children, Judith and Gabriel, from an earlier marriage. Together, they had two more daughters, Mary and Florence. Margit proved to be an excellent housewife and let Dirac attend to his research work as per his needs.

Paul Dirac died October 20, 1984 and was laid to rest at the Tallahassee's Roselawn Cemetery.

The University of New South Wales awards the 'Silver Dirac Medal', the Florida State University awards the 'Dirac-Hellman Award' and the Institute of Physics awards the 'Paul Dirac Medal' in Dirac's honour.

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Paul Dirac's awards

YearNameAward

Other

01933 - Nobel Prize in Physics
0 1952 - Copley Medal
0 1952 - Max Planck Medal

Paul Dirac biography timelines

  • // 8th Aug 1902
    Paul Dirac was born on August 8, 1902 in Bristol, England. His father, Charles Dirac, was a French teacher and his mother, Florence Hannah Dirac, worked in a library.
  • // 1918 To 1921
    After completing his school education in 1918 he studied electrical engineering at the University of Bristol on a scholarship and completed his degree in 1921. Even his first-class honours degree could not get him a job in those post World War I recession times.
  • // 1923
    The University of Bristol offered him a B.A. in Mathematics with no tuition fees, which he accepted. After graduating in 1923 with first class honours, he received a £140 scholarship from the Department of Scientific and Industrial Research.
  • // 1926 To 1927
    Now equipped with enough finance, he went to Cambridge. For the next three years he worked under the supervision of Ralph Fowler and received a PhD in 1926. He continued his research in Copenhagen with Niels Bohr and became a fellow of St. John's College in 1927.
  • // 1928
    In 1928, he postulated a relativistic equation of motion for the wave function of the electron which established a connection between relativity and quantum mechanics. This became his famous ‘Dirac Equation'.
  • // 1928
    In 1928 he derived the 'Spin-1/2 Dirac Equation' equation which predicted the existence of ‘antiparticles’, particles with the same mass as particles of ordinary matter but the opposite electric charge. He became the 'discoverer' of antimatter.
  • // 1930
    His book 'Principles of Quantum Mechanics' published in 1930 consolidated the works on matrix mechanics and wave mechanics into a single mathematical formalism.
  • // 1932 To 1969
    Dirac was the Lucasian Professor of Mathematics at Cambridge from 1932 to 1969. During the World War II he directed the theoretical and experimental research on
  • // 1933
    Dirac and Erwin Schrodinger shared the 1933 Nobel Prize for Physics, a recognition "for the discovery of new productive forms of atomic theory'.
  • // 1937
    Dirac married Margit Wigner in 1937. He adopted Margit's two children, Judith and Gabriel, from an earlier marriage. Together, they had two more daughters, Mary and Florence. Margit proved to be an excellent housewife and let Dirac attend to his research work as per his needs.
  • // 1939
    The book introduced the delta function and in the third edition (1939), he included the bra-ket notation which enabled it to be used universally.
  • // 1939 To 1969
    He received the Royal Medal in 1939. More praise and recognition came with the Copley Medal and the Max Planck Medal in 1952, and the inaugural J Robert Oppenheimer Memorial Prize in 1969.
  • // 1948 To 1971
    He received honorary fellowships from the American Physical Society (1948) and the Institute of Physics, London (1971).
  • // 1963
    He derived the anomalous magnetic moment "Schwinger term" and the Lamb shift using the Heisenberg picture, in 1963.
  • // 1964 To 1967
    His 1964 publication 'Lectures on Quantum Mechanics' dealt with the constrained dynamics of nonlinear dynamical systems and he published a paper titled 'Quantization of the Gravitational Field' to the 1967 ICTP/IAEA Trieste Symposium.
  • // 1975 To 1978
    In 1975, he gave a series of five lectures at the University of New South Wales, which were later published as a book titled 'Directions in Physics' in 1978. The royalties from the book were donated to the university, for the establishment of the Dirac Lecture Series.
  • // 20th Oct 1984
    Paul Dirac died October 20, 1984 and was laid to rest at the Tallahassee's Roselawn Cemetery.

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Paul Dirac's FAQ

  • What is Paul Dirac birthday?

    Paul Dirac was born at 1902-08-08

  • When was Paul Dirac died?

    Paul Dirac was died at 1984-10-20

  • Where was Paul Dirac died?

    Paul Dirac was died in Tallahassee

  • Which age was Paul Dirac died?

    Paul Dirac was died at age 82

  • Where is Paul Dirac's birth place?

    Paul Dirac was born in Bristol

  • What is Paul Dirac nationalities?

    Paul Dirac's nationalities is British

  • What is Paul Dirac hobbies?

    Paul Dirac's hobbies is Gardening

  • Who is Paul Dirac spouses?

    Paul Dirac's spouses is Margit Wigner

  • What was Paul Dirac universities?

    Paul Dirac studied at University Of Bristol, University of Bristol, University of Cambridge, St John's College, Cambridge

  • What was Paul Dirac notable alumnis?

    Paul Dirac's notable alumnis is University Of Bristol

  • What is Paul Dirac's religion?

    Paul Dirac's religion is Atheism

  • What is Paul Dirac's sun sign?

    Paul Dirac is Leo

  • How famous is Paul Dirac?

    Paul Dirac is famouse as Physicist