| 释义 |
resonant, a. and n.|ˈrɛzənənt|
[ad. pres. pple. of L. resonāre to resound. Cf. F. résonnant († resonant), Sp. and Pg. resonante, It. risonante.]
A. adj.
1. a. Of sounds: Re-echoing, resounding; continuing to sound or ring.
1592Conspir. Pretended Ref. Pref. iv, An heape of earnest and resonant, but vndigested wordes. 1667Milton P.L. xi. 559 His volant touch..Fled and pursu'd transverse the resonant fugue. 1860W. J. C. Muir Pagan or Christian? 105 The clear dignity of its resonant expression [is] becoming a feeble whisper. 1873S. Taylor Sound & Music (1896) 80 A column of air is easily set in resonant vibration by a note of suitable pitch. 1877Black Green Past. iv, Although he had never made the gallery of the Union tremble with resonant eloquence.
fig.1842Mrs. Browning Bk. Poets Wks. (1904) 641/2 Massinger's more resonant majesty. 1883Tyndall in Contemp. Rev. XLIV. 38 The name and fame of Rumford..were resonant in Europe at the beginning of this century.
b. Phonetics. Of consonants: liquid or nasal. Cf. the n.
1943K. L. Pike Phonetics vii. 144 The sonorants are nonvocoid resonants and comprise the lateral resonant orals and resonant nasals (e.g. [m], [n], and [l]). 1948W. F. Twaddell in Language XXIV. 141 Before the resonant consonants, only /e/, /a/, and /u/ occurred regularly.
2. a. Of bodies: Causing reinforcement or prolongation of sound, esp. by vibration.
1685Boyle Effects Motion vii. 87 The peculiar kind of tremulous motion into which the parts of the resonant body are put. 1850Mrs. Browning Poems II. 98 The resonant steam-eagles Follow far on the direction of her..hand. 1871Tyndall Fragm. Sci. (ed. 6) I. iii. 81 Mounted thus upon their resonant cases, you hear them loudly sounding the same musical note. 1897Allbutt's Syst. Med. IV. 655 The lungs remain resonant when the larger bronchial tubes are filled with gelatine.
b. Of colours: emphasizing each other by contrast.
1887Portfolio XVIII. 233/2 His painting has ever become slighter, higher in tone and less full and resonant in colour.
3. Of places: Echoing or resounding with something.
1813Shelley Q. Mab viii. 103 Fertile valleys, resonant with bliss. 1872Yeats Techn. Hist. Comm. 194 As the Greek and Roman music passed away, the sombre groves of ancient Germany became resonant with sound.
4. a. Involving, exhibiting, or bringing about electrical resonance (resonance 1 c).
1888Electrician 28 Sept. 663/2 Drawing the micrometer terminals so far apart that sparks can only be made to pass by means of resonant action. 1925Resonant frequency [sense 5 below]. 1938Jrnl. Appl. Physics IX. 654/2 Such a resonator may often be equivalent to a conventional resonant circuit. 1947R. Lee Electronic Transformers & Circuits vii. 192 The heights of resonant peaks and frequency distance between peaks depend upon circuit Q and coefficient of coupling k. 1959K. Henney Radio Engin. Handbk. (ed. 5) v. 27 Multiple resonance imposes practical limits on the way in which resonant circuits may be combined. 1964R. F. Ficchi Electr. Interference v. 56 The isolation offered by the turns eliminates resonant effects. 1966New Scientist 15 Dec. 627/1 The device, known as a resonant-gate transistor, was developed by a team of scientists in..Pittsburgh.
b. Physics and Chem. Pertaining to, involving, exhibiting, or taking part in any other kind of resonance.
1934Resonant frequency [sense 5 below]. 1944L. F. & M. Fieser Org. Chem. xx. 523 Results of the ozonization experiments cited above accord with the concept of two resonant Kekulé forms contributing in an equal extent to the structure. 1960Dicke & Wittke Introd. Quantum Mechanics xvi. 291 When the energy of the incoming particles corresponds to such a state, a resonant condition is said to occur, in which the scattering cross-section is markedly greater than for nonresonant energies. 1965Physics Lett. XIV. 159/1 The enhancement observed [in pion-nucleon interaction] need not necessarily be identified with a resonant state. 1973Sci. Amer. Nov. 125/3 The reason is that one second is about the period at which a 10-inch pendulum vibrates naturally, that is, one second is the frequency of vibration to which the pendulum is resonant. 1976Chem. Physics Lett. XLI. 292/1 The resonant electronic transition is the axial dz2 {lar} dz2 transition at 17 450 cm—1.
5. Special collocations: resonant cavity, a cavity resonator (see resonator 3 b); resonant frequency, a frequency at which resonance (of any kind) takes place; resonant scattering Nuclear Physics = resonance scattering s.v. resonance 3.
1945Nature 15 Sept. 323/1 Dr. J. T. Randall applied the resonant-cavity technique to the relatively ineffective magnetron of pre-war days, and made of it a radically new and immensely powerful device which remains the heart of every modern radar equipment. 1955Science 9 Dec. 1132/3 The deuteron beam..then enters the first of two 48-megacycle resonant-cavity accelerator sections.
1925W. Greenwood Text-bk. Wireless Telegr. & Teleph. i. 19 The resonant frequency is..equal to the natural frequency when the damping is negligible. 1934J. P. Den Hartog Mech. Vibrations ii. 52 The forced frequency coincides exactly with the natural frequency... This important phenomenon is known as ‘resonance’, and the natural frequency is sometimes called also the ‘resonant frequency’. 1964R. F. Ficchi Electr. Interference v. 49 The smaller the total inductance, the higher the resonant frequency.
1948Physical Rev. LXXIV. 926/1 The present work was begun with the object of detecting nuclear resonant scattering from Mg24 nuclei which are excited by resonant radiation from the radioactive Na24 nuclei. 1955[see potential scattering s.v. potential n. 4 c]. 1963W. E. Burcham Nuclear Physics xiii. 484 From the observed cross-section for the resonant scattering effect, with appropriate account taken of the thermal broadening,..a total width of (2·1 {pm} 0·4) × 10-5 eV for the 412 keV level of 198Hg was found.
B. n. A liquid or nasal consonant.
1875Whitney Life Lang. iv. 63 The result is the class of nasals (or ‘resonants’), m, n, and ng (as in singing). 1899Allbutt's Syst. Med. VII. 449 Voiced Nasal Resonants. 1948W. F. Twaddell in Language XXIV. 141, /i/ before resonants was at best very rare. 1956J. Whatmough Language 37 Thus we have the class known as resonants (e.g. l, m). 1970B. M. H. Strang Hist. Eng. ix. 406 The third sub-system consists of resonants, i.e. sounds which may or may not have syllabic function (thus corresponding to approximants, liquids and nasals in P[resent-day] E[nglish]). 1976Archivum Linguisticum VII. 167 The gemination becomes an additional argument for the reconstruction of laryngeals next to a resonant or s.
Hence ˈresonantly adv.
1685Boyle Effects Motion vii. 88 To which note it answered very resonantly, and not sensibly to others, which we made trial of. 1865Daily Tel. 28 Oct. 3/5 Now shrilly ringing, now resonantly surging through nave and aisle. 1880L. Wallace Ben-Hur 426 To get to the Praetorium, as the Romans resonantly styled the palace of Herod on Mount Zion. 1971Nature 15 Oct. 469/2 From the observational viewpoint the soft X-ray enhancement..can be interpreted in terms of solar X-rays resonantly scattered in the Earth's atmosphere. 1977Gramophone May 1737/2 Here if anything he is even more resonantly impressive than he was for Klemperer. 1978Sci. Amer. June 124/1 The audio oscillator was tuned to resonantly oscillate the water..so as to cause vibrational standing waves to form on the surface. |