oscillationn.

Brit.

/ˌɒsᵻˈleɪʃn/, U.S.

/ˌɑsəˈleɪʃ(ə)n/

Origin: A borrowing from Latin. Etymons: Latin ōscillātiōn-, ōscillātiō.

Etymology: < classical Latin ōscillātiōn-, ōscillātiō the action of oscillating < ōscillāt- , past participial stem of ōscillāre oscillate v. + -iō -ion suffix¹. Compare French oscillation (1605).

a. The action of oscillating; movement to and fro; periodic motion about a position of equilibrium, as the swinging of a pendulum. angular oscillation n. rotational oscillation about an axis. axis of oscillation: see axis n.¹ 6. centre of oscillation: see centre n.¹ and adj. Phrases 1.

ΘΚΠ

the world > movement > motion in specific manner > alternating or reciprocating motion > oscillation > [noun]

oscillation1658

the world > matter > physics > mechanics > types of motion > [noun] > vibration or oscillation

vibration1656

oscillation1658

1658 E. Phillips New World Eng. Words Oscillation, a hanging or tottering motion, a swinging upon a rope whose ends are tyed to several beams.

1714 B. Taylor in Philos. Trans. Abridged 1713–23 (Royal Soc.) (1809) 6 7 (heading) Of Finding the Centre of Oscillation.

1855 D. Brewster Mem. Life I. Newton (new ed.) I. xiii. 362 The tides are the consequence of the perpetual oscillation of the waters of the ocean.

1871 B. Stewart Heat (ed. 2) §77 The rate..of a watch depends upon the time of oscillation of its balance-wheel.

1927 C. A. Lindbergh ‘We’ viii. 141 The parachute..commenced an excessive oscillation which continued for about five minutes.

1976 J. Lukasiewicz Railway Game ix. 76 The accident, which occurred at 100 mph on a straight portion of track, was due to violent oscillation of the leading bogie.

2000 J. Sundberg in J. Potter Cambr. Compan. Singing xix. 239 Another type of voice source variation corresponds to different modes of vocal-fold oscillation. These modes are called vocal registers.

b. Chiefly Science. A single movement to and fro; a vibration.

ΘΚΠ

the world > matter > physics > mechanics > types of motion > [noun] > vibration or oscillation > single motion

vibration1666

oscillation1706

excursion1800

1706 W. Jones Synopsis Palmariorum Matheseos 290 In a Medium that does not resist, the shorter Oscillations in a Cycloid are nearly Isocronal.

1726 E. Stone New Math. Dict. at Oscillation If a single Pendulum be suspended between two Semi-Cycloids..so that the String as it oscillates, folds about them, all the Oscillations, however unequal, will be Isochronal in a Non-resisting Medium.

1822 J. Imison Elem. Sci. & Art I. 80 Observing the oscillations of a lamp which was hung from the ceiling.

1865 D. Livingstone & C. Livingstone Narr. Exped. Zambesi xxv. 535 Evidences of the oscillations of land and sea.

1906 J. Galsworthy Man of Prop. 45 Between the points of his collar he gave his head the first small, painful oscillation of the evening.

1982 P. P. Acarnley Stepping Motors (BNC) 49 There is a small amount of viscous friction present in the system so that the oscillations are lightly damped.

2001 Nature 20 Sept. 267/1 Their intention was to study..how energy is distributed among the many possible oscillations generated by the string.

†c. Music = beat n.¹ 8a. Obsolete. rare.Apparently only attested in dictionaries or glossaries.

ΘΚΠ

the world > physical sensation > hearing and noise > thing heard > [noun] > sound > quality of sound > pitch > effect of close pitch

beat1742

oscillation1890

1890 Cent. Dict. (at cited word) Oscillation... In music, same as beat..or beating.

a. figurative. Vacillation, fluctuation, or wavering between two states, opinions, principles, purposes, etc.; an instance of this.

ΘΚΠ

the mind > will > decision > irresolution or vacillation > [noun]

yea-and-nayc1384

vacillationc1400

titteringa1413

stackeringc1440

wondingc1440

fluctuationc1450

waver1519

mammering1532

uncertainty1548

wavering1548

to and fro1553

suspense1560

staggering1565

suspension1568

mammery1578

demur1581

branle1591

dilly-dally1592

hesitance1601

irresolution1601

uncertainness1601

undecision1611

waveringness1614

hesitancy1617

unsettledness1619

hesitation1622

unresolvednessa1626

doubleness of minda1628

wavinga1628

swagging1636

poise1637

mambling1640

stickagea1647

vacillancy1668

whifflinga1677

hovering1679

unresolve1679

irresoluteness1686

shilly-shally1755

indecisiona1763

undecisiveness1779

indecisiveness1793

oscillation1798

flexility1815

shilly-shallying1842

swaying1850

Hamletism1852

teeter1855

havering1866

off and on1875

dilly-dallying1879

double-mindedness1881

hesitatingness1890

dither1958

1798 T. R. Malthus Ess. Princ. Population ii. 31 The same retrograde and progressive movements with respect to happiness... This sort of oscillation will not be remarked by superficial observers.

1818 S. T. Coleridge Friend (new ed.) II. 249 This oscillation of political opinion.

1837 T. De Quincey Revolt of Tartars in Blackwood's Edinb. Mag. July 109/2 Their condition was a constant oscillation of wretchedness; for sometimes, pressed by grinding famine, they took a circuit of perhaps a hundred miles, in order to strike into a land rich in the comforts of life.

1868 J. E. T. Rogers Man. Polit. Econ. iii. 29 There are always oscillations in price.

1891 Dict. National Biogr. XXVI. 198/2 The Reform Bill of 1867 had led (he said) to violent oscillations of the electoral body.

1983 M. Kandel tr. S. Lem His Master's Voice i. 23 An oscillation between punishment and reward, as between pain and pleasure.

b. Psychology (disused). Fluctuation of attention or mental efficiency.

ΘΚΠ

the mind > mental capacity > psychology > mental action or process > [noun] > fluctuation of attention

oscillation1895

1895 Amer. Jrnl. Psychol. 7 84 Schwankungen der Aufsmerksamkeit, oscillations or fluctuations of the attention.

1927 C. E. Spearman Abilities of Man xix. 326 Here in oscillation, then, we have come upon a new single and universal factor, a third in addition to g and perseveration.

1943 C. L. Hull Princ. Behavior xvii. 306 One may reasonably conjecture that it was produced by some factor in the experimental situation other than the primitive oscillation tendency.

3. Electronics. A rapid alternation in the direction of flow of a current; the state of a circuit in which this is occurring. Also: an electromagnetic wave produced by such a current.

ΘΚΠ

the world > matter > physics > electromagnetic radiation > electronics > electronic phenomena > [noun] > oscillation

oscillation1853

the world > matter > physics > electromagnetic radiation > electricity > electrically induced magnetism > [noun] > field > rapidly varying

oscillation1853

1853 tr. H. Helmholtz in Sci. Mem. Trans. Foreign Acad. (Nat. Philos.) 143 It is easy to explain this law if we assume that the discharge of a battery is not a simple motion of the electricity in one direction, but a backward and forward motion between the coatings, in oscillations which become continually smaller until the entire vis viva is destroyed by the sum of the resistances.

1885 Electrician 18 Dec. 106/1 It shows that if the resistance be reduced to nothing, whilst the coefficient of self-induction of the circuit is finite..the oscillations continue for ever undiminished in strength.

1932 E. V. Appleton Thermionic Vacuum Tubes 102 Since the applied anode potential is negative no anode current flows unless oscillations are present.

1951 A. Sheingold Fund. Radio Communications xii. 254 The desirable operational properties of an oscillator may include the property of being self-starting, the ability to maintain continuous oscillation, [etc.].

1975 R. S. Barron & A. M. Joyce Electr. xv. 450 The electrical oscillations of a capacitor-inductor loop can be used to transmit oscillations of radio frequency.

1987 A. K. Walton Network Anal. & Pract. (BNC) 273 There is an absence of oscillation and the circuit in this condition is said to be overdamped.

4. Mathematics.

a. The difference between the greatest and the least values of a function in a given interval.

ΘΚΠ

the world > relative properties > number > algebra > [noun] > expression > function > value or set of values of > difference or interval between values

period1879

oscillation1893

variation1905

1893 J. Harkness & F. Morley Treat. Theory Functions ii. 49 If f(x) be a discontinuous function of x, which is always finite between a and b, its values within an interval δ will have an upper and a lower limit. The difference between these upper and lower limits is named the oscillation of the function.

1937 J. H. Michell & M. H. Belz Elem. Math. Anal. I. i. 73 If the focal bounds are unequal, the sequence is said to be divergent and to have a finite oscillation.

1937 J. H. Michell & M. H. Belz Elem. Math. Anal. I. i. 91 The functions sin x, (sin x)/x. The former function has a finite oscillation −1 to +1 at x = +∞.

1973 G. Klambauer Real Anal. iii. 75 The oscillation is a monotone mapping in the sense that if J₁ and J₂ are bounded open intervals and J₁⊂ J₂, then ω(f; J₁) ≤ ω(f; J₂).

b. Variation consisting of alternate increase and decrease without convergence to a limit or divergence. Cf. oscillate v. 4.

ΘΚΠ

the world > relative properties > number > mathematical number or quantity > numerical arrangement > [noun] > set > sequence > series > variation in

oscillation1908

1908 T. J. I'A. Bromwich Introd. Theory Infinite Series ii. 22 If all the terms..of the series are positive, the sequence..steadily increases; and so..the series Σa_n must be either convergent or divergent; that is, oscillation is impossible.

1968 L. Fox & D. F. Mayers Computing Methods for Scientists & Engineers vii. 129 A characteristic of a good approximation is a type of oscillation property, effectively produced by the presence of n + 2 alternating maxima and minima of the error.

Compounds

C1.

oscillation detector n.

ΚΠ

1908 J. A. Fleming Elem. Man. Radiotelegr. ix. 324 It is necessary to employ in the receiving circuit an oscillation detector which is..not merely affected by oscillations, but affected to some extent proportionately to their amplitude.

1995 Biophysical Jrnl. 68 1621 We show that an excitable system whose kinetic parameters are modulated by the Ca²⁺ concentration can function as a Ca²⁺ oscillation detector.

oscillation hysteresis n.

ΚΠ

1922 E. V. Appleton & B. van der Pol in London, Edinb., & Dublin Philos. Mag. 6th Ser. 43 177 (heading) On a Type of Oscillation Hysteresis in a Simple Triode Generator.

1971 Philos. Trans. (Royal Soc.) A. 269 398 When the wind speed is reduced, some oscillation hysteresis is evident.

1999 Jrnl. Acoustical Soc. Amer. 105 423 Both bifurcations combine to form an ‘oscillation hysteresis’ phenomenon, common in cases of flow-induced oscillations.

oscillation valve n.

ΚΠ

1905 J. A. Fleming in Proc. Royal Soc. 74 479 It is necessary to associate with the oscillation valve and galvanometer an oscillation transformer for raising the voltage.

1908 J. A. Fleming Elem. Man. Radiotelegr. vi. 205 A very simple but effective form of oscillation valve was invented by the author in 1904.

C2.

oscillation circuit n. = oscillator circuit n. at oscillator n. Compounds.

ΚΠ

1906 A. F. Collins Man. Wireless Telegr. ii. 32 The resistance of an oscillation circuit is practically negligible.

1992 ASAIO Jrnl. 38 M171 The instrumentation consisted of a piezoelectric quartz crystal vacuum-deposited with gold and connected to two electrodes, an oscillation circuit, a frequency counter, and a DC source.

oscillation constant n. now rare a constant associated with a resonant electrical circuit, equal to the square root of the product of its inductance and its capacitance.

ΘΚΠ

the world > matter > physics > electromagnetic radiation > electronics > electronic phenomena > [noun] > oscillation > constant

oscillation constant1905

1905 J. A. Fleming in Proc. Royal Soc. 74 488 The author proposes to call this quantity √CL the oscillation constant of the circuit.

1908 C. C. F. Monckton Radio-telegr. ii. 36 For different circuits, as long as the oscillation constants are the same the natural periods of vibration are the same.

oscillation transformer n. = jigger n.¹ 5p.

ΘΚΠ

society > communication > telecommunication > radio communications > radio equipment > [noun] > radio set > oscillators > transformer

jigger1902

oscillation transformer1905

1905 J. A. Fleming in Proc. Royal Soc. 74 479 It is necessary to associate with the oscillation valve and galvanometer an oscillation transformer for raising the voltage.

1906 J. A. Fleming Princ. Electr. Wave Telegr. vii. 437 If the oscillation transformer, or jigger, is not wound to suit the wave length employed, so far from being a benefit, it prevents any signals being received at all.

1923 A. F. Collins Everybody's Wireless Bk. viii. 130 There are two distinct types of tuning coils used for continuous wave sending sets, and these are (1) the helix, or close-coupled coil, and (2) the oscillation transformer, or loose-coupled coil. The former gives much better results.

1958 Science 16 May 1154/3 Tesla's next and better-known apparatus for producing currents of high voltage and high frequency was the oscillation transformer or ‘Tesla coil’, an air-core transformer having the primary and secondary tuned to resonance.

This entry has been updated (OED Third Edition, September 2004; most recently modified version published online June 2022).

单词	oscillation
释义	oscillationn. Brit. /ˌɒsᵻˈleɪʃn/, U.S. /ˌɑsəˈleɪʃ(ə)n/ Origin: A borrowing from Latin. Etymons: Latin ōscillātiōn-, ōscillātiō. Etymology: < classical Latin ōscillātiōn-, ōscillātiō the action of oscillating < ōscillāt- , past participial stem of ōscillāre oscillate v. + -iō -ion suffix¹. Compare French oscillation (1605). 1. a. The action of oscillating; movement to and fro; periodic motion about a position of equilibrium, as the swinging of a pendulum. angular oscillation n. rotational oscillation about an axis. axis of oscillation: see axis n.¹ 6. centre of oscillation: see centre n.¹ and adj. Phrases 1. ΘΚΠ the world > movement > motion in specific manner > alternating or reciprocating motion > oscillation > [noun] oscillation1658 the world > matter > physics > mechanics > types of motion > [noun] > vibration or oscillation vibration1656 oscillation1658 1658 E. Phillips New World Eng. Words Oscillation, a hanging or tottering motion, a swinging upon a rope whose ends are tyed to several beams. 1714 B. Taylor in Philos. Trans. Abridged 1713–23 (Royal Soc.) (1809) 6 7 (heading) Of Finding the Centre of Oscillation. 1855 D. Brewster Mem. Life I. Newton (new ed.) I. xiii. 362 The tides are the consequence of the perpetual oscillation of the waters of the ocean. 1871 B. Stewart Heat (ed. 2) §77 The rate..of a watch depends upon the time of oscillation of its balance-wheel. 1927 C. A. Lindbergh ‘We’ viii. 141 The parachute..commenced an excessive oscillation which continued for about five minutes. 1976 J. Lukasiewicz Railway Game ix. 76 The accident, which occurred at 100 mph on a straight portion of track, was due to violent oscillation of the leading bogie. 2000 J. Sundberg in J. Potter Cambr. Compan. Singing xix. 239 Another type of voice source variation corresponds to different modes of vocal-fold oscillation. These modes are called vocal registers. b. Chiefly Science. A single movement to and fro; a vibration. ΘΚΠ the world > matter > physics > mechanics > types of motion > [noun] > vibration or oscillation > single motion vibration1666 oscillation1706 excursion1800 1706 W. Jones Synopsis Palmariorum Matheseos 290 In a Medium that does not resist, the shorter Oscillations in a Cycloid are nearly Isocronal. 1726 E. Stone New Math. Dict. at Oscillation If a single Pendulum be suspended between two Semi-Cycloids..so that the String as it oscillates, folds about them, all the Oscillations, however unequal, will be Isochronal in a Non-resisting Medium. 1822 J. Imison Elem. Sci. & Art I. 80 Observing the oscillations of a lamp which was hung from the ceiling. 1865 D. Livingstone & C. Livingstone Narr. Exped. Zambesi xxv. 535 Evidences of the oscillations of land and sea. 1906 J. Galsworthy Man of Prop. 45 Between the points of his collar he gave his head the first small, painful oscillation of the evening. 1982 P. P. Acarnley Stepping Motors (BNC) 49 There is a small amount of viscous friction present in the system so that the oscillations are lightly damped. 2001 Nature 20 Sept. 267/1 Their intention was to study..how energy is distributed among the many possible oscillations generated by the string. †c. Music = beat n.¹ 8a. Obsolete. rare.Apparently only attested in dictionaries or glossaries. ΘΚΠ the world > physical sensation > hearing and noise > thing heard > [noun] > sound > quality of sound > pitch > effect of close pitch beat1742 oscillation1890 1890 Cent. Dict. (at cited word) Oscillation... In music, same as beat..or beating. 2. a. figurative. Vacillation, fluctuation, or wavering between two states, opinions, principles, purposes, etc.; an instance of this. ΘΚΠ the mind > will > decision > irresolution or vacillation > [noun] yea-and-nayc1384 vacillationc1400 titteringa1413 stackeringc1440 wondingc1440 fluctuationc1450 waver1519 mammering1532 uncertainty1548 wavering1548 to and fro1553 suspense1560 staggering1565 suspension1568 mammery1578 demur1581 branle1591 dilly-dally1592 hesitance1601 irresolution1601 uncertainness1601 undecision1611 waveringness1614 hesitancy1617 unsettledness1619 hesitation1622 unresolvednessa1626 doubleness of minda1628 wavinga1628 swagging1636 poise1637 mambling1640 stickagea1647 vacillancy1668 whifflinga1677 hovering1679 unresolve1679 irresoluteness1686 shilly-shally1755 indecisiona1763 undecisiveness1779 indecisiveness1793 oscillation1798 flexility1815 shilly-shallying1842 swaying1850 Hamletism1852 teeter1855 havering1866 off and on1875 dilly-dallying1879 double-mindedness1881 hesitatingness1890 dither1958 1798 T. R. Malthus Ess. Princ. Population ii. 31 The same retrograde and progressive movements with respect to happiness... This sort of oscillation will not be remarked by superficial observers. 1818 S. T. Coleridge Friend (new ed.) II. 249 This oscillation of political opinion. 1837 T. De Quincey Revolt of Tartars in Blackwood's Edinb. Mag. July 109/2 Their condition was a constant oscillation of wretchedness; for sometimes, pressed by grinding famine, they took a circuit of perhaps a hundred miles, in order to strike into a land rich in the comforts of life. 1868 J. E. T. Rogers Man. Polit. Econ. iii. 29 There are always oscillations in price. 1891 Dict. National Biogr. XXVI. 198/2 The Reform Bill of 1867 had led (he said) to violent oscillations of the electoral body. 1983 M. Kandel tr. S. Lem His Master's Voice i. 23 An oscillation between punishment and reward, as between pain and pleasure. b. Psychology (disused). Fluctuation of attention or mental efficiency. ΘΚΠ the mind > mental capacity > psychology > mental action or process > [noun] > fluctuation of attention oscillation1895 1895 Amer. Jrnl. Psychol. 7 84 Schwankungen der Aufsmerksamkeit, oscillations or fluctuations of the attention. 1927 C. E. Spearman Abilities of Man xix. 326 Here in oscillation, then, we have come upon a new single and universal factor, a third in addition to g and perseveration. 1943 C. L. Hull Princ. Behavior xvii. 306 One may reasonably conjecture that it was produced by some factor in the experimental situation other than the primitive oscillation tendency. 3. Electronics. A rapid alternation in the direction of flow of a current; the state of a circuit in which this is occurring. Also: an electromagnetic wave produced by such a current. ΘΚΠ the world > matter > physics > electromagnetic radiation > electronics > electronic phenomena > [noun] > oscillation oscillation1853 the world > matter > physics > electromagnetic radiation > electricity > electrically induced magnetism > [noun] > field > rapidly varying oscillation1853 1853 tr. H. Helmholtz in Sci. Mem. Trans. Foreign Acad. (Nat. Philos.) 143 It is easy to explain this law if we assume that the discharge of a battery is not a simple motion of the electricity in one direction, but a backward and forward motion between the coatings, in oscillations which become continually smaller until the entire vis viva is destroyed by the sum of the resistances. 1885 Electrician 18 Dec. 106/1 It shows that if the resistance be reduced to nothing, whilst the coefficient of self-induction of the circuit is finite..the oscillations continue for ever undiminished in strength. 1932 E. V. Appleton Thermionic Vacuum Tubes 102 Since the applied anode potential is negative no anode current flows unless oscillations are present. 1951 A. Sheingold Fund. Radio Communications xii. 254 The desirable operational properties of an oscillator may include the property of being self-starting, the ability to maintain continuous oscillation, [etc.]. 1975 R. S. Barron & A. M. Joyce Electr. xv. 450 The electrical oscillations of a capacitor-inductor loop can be used to transmit oscillations of radio frequency. 1987 A. K. Walton Network Anal. & Pract. (BNC) 273 There is an absence of oscillation and the circuit in this condition is said to be overdamped. 4. Mathematics. a. The difference between the greatest and the least values of a function in a given interval. ΘΚΠ the world > relative properties > number > algebra > [noun] > expression > function > value or set of values of > difference or interval between values period1879 oscillation1893 variation1905 1893 J. Harkness & F. Morley Treat. Theory Functions ii. 49 If f(x) be a discontinuous function of x, which is always finite between a and b, its values within an interval δ will have an upper and a lower limit. The difference between these upper and lower limits is named the oscillation of the function. 1937 J. H. Michell & M. H. Belz Elem. Math. Anal. I. i. 73 If the focal bounds are unequal, the sequence is said to be divergent and to have a finite oscillation. 1937 J. H. Michell & M. H. Belz Elem. Math. Anal. I. i. 91 The functions sin x, (sin x)/x. The former function has a finite oscillation −1 to +1 at x = +∞. 1973 G. Klambauer Real Anal. iii. 75 The oscillation is a monotone mapping in the sense that if J₁ and J₂ are bounded open intervals and J₁⊂ J₂, then ω(f; J₁) ≤ ω(f; J₂). b. Variation consisting of alternate increase and decrease without convergence to a limit or divergence. Cf. oscillate v. 4. ΘΚΠ the world > relative properties > number > mathematical number or quantity > numerical arrangement > [noun] > set > sequence > series > variation in oscillation1908 1908 T. J. I'A. Bromwich Introd. Theory Infinite Series ii. 22 If all the terms..of the series are positive, the sequence..steadily increases; and so..the series Σa_n must be either convergent or divergent; that is, oscillation is impossible. 1968 L. Fox & D. F. Mayers Computing Methods for Scientists & Engineers vii. 129 A characteristic of a good approximation is a type of oscillation property, effectively produced by the presence of n + 2 alternating maxima and minima of the error. Compounds C1. oscillation detector n. ΚΠ 1908 J. A. Fleming Elem. Man. Radiotelegr. ix. 324 It is necessary to employ in the receiving circuit an oscillation detector which is..not merely affected by oscillations, but affected to some extent proportionately to their amplitude. 1995 Biophysical Jrnl. 68 1621 We show that an excitable system whose kinetic parameters are modulated by the Ca²⁺ concentration can function as a Ca²⁺ oscillation detector. oscillation hysteresis n. ΚΠ 1922 E. V. Appleton & B. van der Pol in London, Edinb., & Dublin Philos. Mag. 6th Ser. 43 177 (heading) On a Type of Oscillation Hysteresis in a Simple Triode Generator. 1971 Philos. Trans. (Royal Soc.) A. 269 398 When the wind speed is reduced, some oscillation hysteresis is evident. 1999 Jrnl. Acoustical Soc. Amer. 105 423 Both bifurcations combine to form an ‘oscillation hysteresis’ phenomenon, common in cases of flow-induced oscillations. oscillation valve n. ΚΠ 1905 J. A. Fleming in Proc. Royal Soc. 74 479 It is necessary to associate with the oscillation valve and galvanometer an oscillation transformer for raising the voltage. 1908 J. A. Fleming Elem. Man. Radiotelegr. vi. 205 A very simple but effective form of oscillation valve was invented by the author in 1904. C2. oscillation circuit n. = oscillator circuit n. at oscillator n. Compounds. ΚΠ 1906 A. F. Collins Man. Wireless Telegr. ii. 32 The resistance of an oscillation circuit is practically negligible. 1992 ASAIO Jrnl. 38 M171 The instrumentation consisted of a piezoelectric quartz crystal vacuum-deposited with gold and connected to two electrodes, an oscillation circuit, a frequency counter, and a DC source. oscillation constant n. now rare a constant associated with a resonant electrical circuit, equal to the square root of the product of its inductance and its capacitance. ΘΚΠ the world > matter > physics > electromagnetic radiation > electronics > electronic phenomena > [noun] > oscillation > constant oscillation constant1905 1905 J. A. Fleming in Proc. Royal Soc. 74 488 The author proposes to call this quantity √CL the oscillation constant of the circuit. 1908 C. C. F. Monckton Radio-telegr. ii. 36 For different circuits, as long as the oscillation constants are the same the natural periods of vibration are the same. oscillation transformer n. = jigger n.¹ 5p. ΘΚΠ society > communication > telecommunication > radio communications > radio equipment > [noun] > radio set > oscillators > transformer jigger1902 oscillation transformer1905 1905 J. A. Fleming in Proc. Royal Soc. 74 479 It is necessary to associate with the oscillation valve and galvanometer an oscillation transformer for raising the voltage. 1906 J. A. Fleming Princ. Electr. Wave Telegr. vii. 437 If the oscillation transformer, or jigger, is not wound to suit the wave length employed, so far from being a benefit, it prevents any signals being received at all. 1923 A. F. Collins Everybody's Wireless Bk. viii. 130 There are two distinct types of tuning coils used for continuous wave sending sets, and these are (1) the helix, or close-coupled coil, and (2) the oscillation transformer, or loose-coupled coil. The former gives much better results. 1958 Science 16 May 1154/3 Tesla's next and better-known apparatus for producing currents of high voltage and high frequency was the oscillation transformer or ‘Tesla coil’, an air-core transformer having the primary and secondary tuned to resonance. This entry has been updated (OED Third Edition, September 2004; most recently modified version published online June 2022). < n.1658
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