selectronn.¹

/sɪˈlɛktrɒn/

Forms: Also Selectron.

Etymology: < select v. + -ron (in -tron suffix).

A kind of cathode-ray tube formerly used in computers as a means of storing digital information.

ΘΚΠ

society > computing and information technology > hardware > secondary storage > [noun] > cathode-ray tube

selectron1947

Williams tube1950

1947 Math. Tables & Other Aids Computation 2 229 ‘The selectron—a tube for selective electrostatic storage’ by Dr. Jan Rajchman.

1947 H. H. Goldstine & J. Von Neumann in J. Von Neumann Coll. Wks. (1963) V. 82 The control scans the coded instruction in the selectron memory as a rule linearly.

1950 W. W. Stifler High-speed Computing Devices (Engin. Res. Associates) xiv. 370 The Selectron utilizes the fact that an insulated secondary-electron emitter can be made to ‘float’ at either of two stable potentials.

1957 R. K. Richards Digital Computer Components & Circuits vi. 265 Among the more important forms of electrostatic storage are the ‘Williams tube’, the ‘barrier-grid tube’, the ‘holding-gun tube’, and the Selectron, each of which has at one time or another been successfully used in a digital computer.

This entry has not yet been fully updated (first published 1986; most recently modified version published online December 2020).

selectronn.²

/sɪˈlɛktrɒn/

Etymology: < s- (in super- prefix) + electron n.²

Particle Physics.

The supersymmetric counterpart of the electron, with spin 0 instead of ½.

ΘΚΠ

the world > matter > physics > quantum theory > electron spin > [noun] > supersymmetric counterpart

selectron1982

the world > matter > physics > quantum theory > quantum mechanics > symmetry, conserved properly > [noun] > supersymmetric counterpart of electron

selectron1982

the world > matter > physics > atomic physics > particle physics > particle avoiding strong interaction > electron > [noun] > supersymmetric counterpart of

selectron1982

1982 Physics Lett. B. 116 280/1 The selectron decays very rapidly to an electron and a photino.

1984 Times 16 Feb. 10/5 In the case of the electron, the supersymmetric version, the ‘selectron’ would have the same electromagnetic properties, but unlike the electron would have zero spin.

1985 Nature 3 Jan. 9/1 Superelectrons (selectrons) would have Bose statistics, while superphotons (photinos) would be fermions.

1986 New Scientist 2 Jan. 26/1 The theory of supersymmetry predicts that the electron should have a partner called the selectron, but the theory does not give the selectron's mass.

This entry has not yet been fully updated (first published 1993; most recently modified version published online March 2018).

单词	selectron
释义	selectronn.¹ /sɪˈlɛktrɒn/ Forms: Also Selectron. Etymology: < select v. + -ron (in -tron suffix). A kind of cathode-ray tube formerly used in computers as a means of storing digital information. ΘΚΠ society > computing and information technology > hardware > secondary storage > [noun] > cathode-ray tube selectron1947 Williams tube1950 1947 Math. Tables & Other Aids Computation 2 229 ‘The selectron—a tube for selective electrostatic storage’ by Dr. Jan Rajchman. 1947 H. H. Goldstine & J. Von Neumann in J. Von Neumann Coll. Wks. (1963) V. 82 The control scans the coded instruction in the selectron memory as a rule linearly. 1950 W. W. Stifler High-speed Computing Devices (Engin. Res. Associates) xiv. 370 The Selectron utilizes the fact that an insulated secondary-electron emitter can be made to ‘float’ at either of two stable potentials. 1957 R. K. Richards Digital Computer Components & Circuits vi. 265 Among the more important forms of electrostatic storage are the ‘Williams tube’, the ‘barrier-grid tube’, the ‘holding-gun tube’, and the Selectron, each of which has at one time or another been successfully used in a digital computer. This entry has not yet been fully updated (first published 1986; most recently modified version published online December 2020). selectronn.² /sɪˈlɛktrɒn/ Etymology: < s- (in super- prefix) + electron n.² Particle Physics. The supersymmetric counterpart of the electron, with spin 0 instead of ½. ΘΚΠ the world > matter > physics > quantum theory > electron spin > [noun] > supersymmetric counterpart selectron1982 the world > matter > physics > quantum theory > quantum mechanics > symmetry, conserved properly > [noun] > supersymmetric counterpart of electron selectron1982 the world > matter > physics > atomic physics > particle physics > particle avoiding strong interaction > electron > [noun] > supersymmetric counterpart of selectron1982 1982 Physics Lett. B. 116 280/1 The selectron decays very rapidly to an electron and a photino. 1984 Times 16 Feb. 10/5 In the case of the electron, the supersymmetric version, the ‘selectron’ would have the same electromagnetic properties, but unlike the electron would have zero spin. 1985 Nature 3 Jan. 9/1 Superelectrons (selectrons) would have Bose statistics, while superphotons (photinos) would be fermions. 1986 New Scientist 2 Jan. 26/1 The theory of supersymmetry predicts that the electron should have a partner called the selectron, but the theory does not give the selectron's mass. This entry has not yet been fully updated (first published 1993; most recently modified version published online March 2018). < n.¹1947n.²1982
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