Diracn.

/dɪˈrak/

Etymology: < the name of Paul Adrien Maurice Dirac (1902–84), British mathematician and physicist.

Used attributively to designate phenomena, theories, etc., in Mathematics and Physics discovered, described, or postulated by Dirac. Also in Fermi-Dirac n.

ΚΠ

1933 G. P. Harnwell & J. J. Livingood Exper. Atomic Physics Index 461 Dirac-Fermi statistics.

1934 Physical Rev. 46 110/1 When the electron is very intimately connected with an attractive center, something happens to its spin which is not adequately described by the Dirac theory.

1935 Physical Rev. 48 284/2 The interaction of the heavy particles with the electrons (represented, for instance, by the Dirac ‘density matrix’).

1935 Physical Rev. 48 435/1 The frequencies of the emitted light are determined by the eigenvalues of the Dirac equation.

1955 W. Pauli in W. Pauli Niels Bohr & Devel. Physics 33 The coupling between one Boson field and one Dirac field.

1955 W. Pauli in W. Pauli Niels Bohr & Devel. Physics 39 The Dirac equations for spinors are preserved.

1955 W. Pauli in W. Pauli Niels Bohr & Devel. Physics 47 A Dirac spinor with four components can be decomposed into two irreducible parts.

1970 G. K. Woodgate Elem. Atomic Struct. iii. 36 The radiation field also is treated as a quantized system (Dirac method).

This entry has not yet been fully updated (first published 1972; most recently modified version published online September 2018).

单词	dirac
释义	Diracn. /dɪˈrak/ Etymology: < the name of Paul Adrien Maurice Dirac (1902–84), British mathematician and physicist. Used attributively to designate phenomena, theories, etc., in Mathematics and Physics discovered, described, or postulated by Dirac. Also in Fermi-Dirac n. ΚΠ 1933 G. P. Harnwell & J. J. Livingood Exper. Atomic Physics Index 461 Dirac-Fermi statistics. 1934 Physical Rev. 46 110/1 When the electron is very intimately connected with an attractive center, something happens to its spin which is not adequately described by the Dirac theory. 1935 Physical Rev. 48 284/2 The interaction of the heavy particles with the electrons (represented, for instance, by the Dirac ‘density matrix’). 1935 Physical Rev. 48 435/1 The frequencies of the emitted light are determined by the eigenvalues of the Dirac equation. 1955 W. Pauli in W. Pauli Niels Bohr & Devel. Physics 33 The coupling between one Boson field and one Dirac field. 1955 W. Pauli in W. Pauli Niels Bohr & Devel. Physics 39 The Dirac equations for spinors are preserved. 1955 W. Pauli in W. Pauli Niels Bohr & Devel. Physics 47 A Dirac spinor with four components can be decomposed into two irreducible parts. 1970 G. K. Woodgate Elem. Atomic Struct. iii. 36 The radiation field also is treated as a quantized system (Dirac method). This entry has not yet been fully updated (first published 1972; most recently modified version published online September 2018). < n.1933
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