| 单词 | cathode-ray oscilloscope |
| 释义 | > as lemmascathode-ray oscilloscope cathode-ray oscilloscope n. (see quot.). ΚΠ 1951 E. B. Uvarov & D. R. Chapman Dict. Sci. (ed. 2) 44 Cathode ray oscilloscope, apparatus consisting essentially of an ‘electron gun’ producing a beam of electrons which passes through horizontal and vertical deflecting plates, to fall upon a fluorescent screen. cathode-ray oscilloscope 1. A device for recording oscillations; = oscillograph n. 2a. Now: spec. (more fully cathode-ray oscilloscope) an electronic instrument in which a moving spot on the screen of a cathode ray tube represents by its position the relationship between two variables, usually a steady or varying signal voltage (vertically) and time (horizontally), and which is capable of displaying an oscillating voltage as a stationary trace. ΘΚΠ the world > matter > physics > electromagnetic radiation > electricity > electric current > alternating current > [noun] > instrument displaying change oscillograph1893 oscilloscope1909 the world > matter > physics > electromagnetic radiation > electronics > electronic devices or components > cathode-ray tube > [noun] > oscilloscope oscilloscope1909 monitor1931 1909 Webster's New Internat. Dict. Eng. Lang. Oscilloscope, an instrument for showing visually the changes in a varying current; an oscillograph. 1927 F. Bedell & H. Reich in Trans. Amer. Inst. Electr. Engineers 46 546 These limitations..may be removed and the field of usefulness of the cathode-ray oscillograph so widened that it becomes practically a new instrument. As the instrument developed for this purpose..is primarily intended for visual observation, we have given it the name ‘oscilloscope’. Permanent record may be obtained..by a photograph in the usual way. On the other hand, an oscillograph of the Blondel or Duddell type, both in name and in fact, is primarily for graphical record. 1936 V. Karapetoff & B. C. Dennison Electr. Lab. Exper. xix. 451 The need exists for an oscillograph possessing negligible inertia. Such an instrument is the cathode-ray oscillograph, or oscilloscope. 1953 A. C. Clarke Prelude to Space (rev. ed.) xxiii. 121 Clifton seemed to be hypnotised by a cathode-ray oscilloscope, the screen of which was filled with fantastic geometrical figures, continually shifting. 1967 G. F. Fiennes I tried to run Railway viii. 99 One weekend the oscilloscope at one depot, Laira, found seven axles flawed. 1982 Giant Bk. Electronics Projects v. 198 The waveform is evident in the oscilloscope display. 1992 Everyday Electronics (BNC) June 373 If an oscilloscope is available, check that a signal is reaching pin 3 of IC1 when a sound is directed into the microphone. < as lemmas |
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