| 单词 | phonic motor |
| 释义 | > as lemmasphonic motor phonic motor n. = phonic wheel n. ΚΠ 1924 Jrnl. Sci. Instruments 1 162 By making use of a device known as a phonic motor—invented by the late Lord Rayleigh—a wheel is constrained to rotate at a constant speed controlled by an electromagnetically maintained tuning-fork. 1955 Vistas in Astron. 1 440 By means of suitable gearing, the phonic motor drives a shaft at one revolution per second and closes a contact every second. 2001 Re: Pre ARPAnet email? in alt.folklore.computers (Usenet newsgroup) 29 Apr. The supply to this phonic motor derives from a vibrating reed whose frequency is controlled by pulses coming every second from a pendulum clock. phonic motor 1. Of or relating to sound; acoustic. Now chiefly in phonic motor, phonic wheel ( Compounds). ΘΚΠ the world > matter > physics > science of sound > [adjective] acoustic1640 acoustical1803 phonic1823 magneto-acoustic1903 audio1960 1823 C. Wheatstone in Ann. Philos. New Ser. 6 81 On the Phonic Molecular Vibrations. 1858 R. G. Mayne Expos. Lexicon Med. Sci. (1860) 945/2 The point where is found either the person who speaks, or the body which emits the sound is called the phonic centre. 1878 Smithsonian Inst. Rep. 492 The axis of the phonic ray will be deflected upwards. 1998 Nature 23 July 327/2 A complementary realization of the ‘musical’ principles governing the ‘molecular vibrations’ in both light and sound was provided by Wheatstone's. ‘Kaleidophone or Phonic Kaleidoscope’. < as lemmas |
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