undulatorn.

/ˈʌndjʊleɪtə/

Etymology: < undulate v. + -or suffix.

1. Telegraphy. A device for recording Morse signals in which a line is traced on a roll of paper by a pen that is deflected sideways during the transmission of a dot or dash.

ΘΚΠ

society > communication > telecommunication > telegraphy or telephony > telegraphy > telegraph > [noun] > types of > recording telegraphs

telegraph register1845

Morse1867

recorder1867

nicker1871

ink-writer1876

inker1882

ticker1883

news ticker1887

tape-machine1891

synchronograph1897

tape-ticker1904

undulator1910

reperforator1913

1910 Post Office Electr. Engineers' Jrnl. 2 312 The undulator is an instrument of considerable sensitiveness working with a current of ·5 milliampères, and is capable of recording 200, or slightly more, words per minute.

1921 Wireless World 9 479/2 I have in addition two picture slides which illustrate the undulator of Messrs. Creed & Co.

1959 K. Henney Radio Engin. Handbk. (ed. 5) xxiv. 35 Reception..is effected by recording the incoming Morse signal on an ink recorder, or undulator.

2. Physics. A device in which a beam of particles is made to describe a sinusoidal path (and so emit radiation) by a series of transverse electric or magnetic fields of alternating polarity.Originally introduced as a means of generating microwaves of millimetre and submillimetre wavelength.

ΘΚΠ

the world > matter > physics > atomic physics > particle physics > particle avoiding strong interaction > electron > [noun] > device emitting beams

electron gun1924

gun1933

undulator1951

the world > matter > physics > atomic physics > particle physics > photon particle > [noun] > device producing beam

undulator1981

1951 H. Motz in Jrnl. Appl. Physics XXII. 529/2 We want to calculate the energy radiated by an electron riding through a succession of electric or magnetic fields of alternating polarity. We shall call the arrangement an undulator.

1963 A. F. Harvey Microwave Engin. xii. 559 The electrons can be given a transverse motion by passage through an undulator.

1981 McGraw-Hill Yearbk. Sci. & Technol. 406/1 Multiperiod wigglers or undulators have also been used recently to make quasi~monochromatic photon beams.

This entry has not yet been fully updated (first published 1933; most recently modified version published online December 2021).

单词	undulator
释义	undulatorn. /ˈʌndjʊleɪtə/ Etymology: < undulate v. + -or suffix. 1. Telegraphy. A device for recording Morse signals in which a line is traced on a roll of paper by a pen that is deflected sideways during the transmission of a dot or dash. ΘΚΠ society > communication > telecommunication > telegraphy or telephony > telegraphy > telegraph > [noun] > types of > recording telegraphs telegraph register1845 Morse1867 recorder1867 nicker1871 ink-writer1876 inker1882 ticker1883 news ticker1887 tape-machine1891 synchronograph1897 tape-ticker1904 undulator1910 reperforator1913 1910 Post Office Electr. Engineers' Jrnl. 2 312 The undulator is an instrument of considerable sensitiveness working with a current of ·5 milliampères, and is capable of recording 200, or slightly more, words per minute. 1921 Wireless World 9 479/2 I have in addition two picture slides which illustrate the undulator of Messrs. Creed & Co. 1959 K. Henney Radio Engin. Handbk. (ed. 5) xxiv. 35 Reception..is effected by recording the incoming Morse signal on an ink recorder, or undulator. 2. Physics. A device in which a beam of particles is made to describe a sinusoidal path (and so emit radiation) by a series of transverse electric or magnetic fields of alternating polarity.Originally introduced as a means of generating microwaves of millimetre and submillimetre wavelength. ΘΚΠ the world > matter > physics > atomic physics > particle physics > particle avoiding strong interaction > electron > [noun] > device emitting beams electron gun1924 gun1933 undulator1951 the world > matter > physics > atomic physics > particle physics > photon particle > [noun] > device producing beam undulator1981 1951 H. Motz in Jrnl. Appl. Physics XXII. 529/2 We want to calculate the energy radiated by an electron riding through a succession of electric or magnetic fields of alternating polarity. We shall call the arrangement an undulator. 1963 A. F. Harvey Microwave Engin. xii. 559 The electrons can be given a transverse motion by passage through an undulator. 1981 McGraw-Hill Yearbk. Sci. & Technol. 406/1 Multiperiod wigglers or undulators have also been used recently to make quasi~monochromatic photon beams. This entry has not yet been fully updated (first published 1933; most recently modified version published online December 2021). < n.1910
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