English - Turkish
Definition of dirac in English Turkish dictionary
- dirac function
- (Bilgisayar) dirac işlevi
- dirac function
- (Matematik,Teknik) dürtü işlevi
- dirac function
- dirac fonksiyonu
- Dirac delta function
- (impulse function) durtu islevi
Related Terms
English - English
Definition of dirac in English English dictionary
- Paul Dirac British physicist
- A surname of French derivation
- English theoretical physicist who applied relativity theory to quantum mechanics and predicted the existence of antimatter and the positron (1902-1984)
- Dirac constant
- Planck's constant divided by 2π. Also called the rationalized or reduced Planck's constant; symbol is ħ, written in ASCII as h bar
- Dirac equation
- A relativistic wave equation that describes an electron (and similar particles); it predicted the existence of antiparticles
- Dirac fermion
- Any fermion that is not its own antiparticle
- Dirac fermions
- plural form of Dirac fermion
- Dirac sea
- In relativistic quantum mechanics, the completely filled, negative energy electron state that comprises a vacuum. If a negative energy electron is promoted to a positive energy state, the hole is perceived as a positron
- Fermi-Dirac statistics
- In quantum mechanics, one of two possible ways (the other being Bose-Einstein statistics) in which a system of indistinguishable particles can be distributed among a set of energy states. Each available discrete state can be occupied by only one particle. This exclusiveness accounts for the structure of atoms, in which electrons remain in separate states rather than collapsing into a common state. It also accounts for some aspects of electrical conductivity. This theory of statistical behaviour was developed first by Enrico Fermi and then by P.A.M. Dirac (1926-27). The statistics apply only to particles such as electrons that have half-integer values of spin; the particles are called fermions
- Paul Adrien Maurice Dirac
- born Aug. 8, 1902, Bristol, Gloucestershire, Eng. died Oct. 20, 1984, Tallahassee, Fla., U.S. English mathematician and theoretical physicist. His first major contribution, in 1925-26, was a general and logically simple form of quantum mechanics. About the same time, he developed ideas of Enrico Fermi which led to Fermi-Dirac statistics. He then applied Albert Einstein's special theory of relativity to the quantum mechanics of the electron and showed that the electron must have spin of 1 2 . His theory also revealed new states later identified with the positron. He shared the 1933 Nobel Prize for Physics with Erwin Schrödinger. In 1932 Dirac was appointed to the Lucasian mathematics professorship at the University of Cambridge, a chair once occupied by Isaac Newton. He retired from Cambridge in 1968 and became professor emeritus at Florida State University in 1971
- fermi-dirac statistics
- (physics) law obeyed by a systems of particles whose wave function changes when two particles are interchanged (the Pauli exclusion principle applies)