| 释义 |
▪ I. strobe, a. and n.|strəʊb|
[f. first syllable of stroboscopic a. and related words.]
A. adj.
1. = stroboscopic a.
1942Amer. Cinematographer Sept. 422/3 Adjust the speed of the projector until the bars on the ‘strobe’ band corresponding to the number of blades in the projector shutter appear to stand still. 1949H. Luray Strobe viii. 110 (caption) A classic strobe shot. Drop of milk splashing on a plate covered by a thin layer of milk. 1962Amer. Jrnl. Physics XXX. 925/2 Strobe photography is an area that has not been saturated at science fairs. 1966McGraw-Hill Encycl. Sci. & Technol. XIII. 187/1 Stroboscopic or ‘strobe’ photography is generally understood to refer to pictures of both single and multiple exposure taken by flashes of light from electrical discharges. 1978Oceans May–June 39/1 Flash bulbs or strobe (electronic flash) lighting is often used to restore lost colors and provide light for an exposure.
2. Special collocations: strobe disc, a disc with alternate light and dark sectors of equal size for checking the speed of rotation of something, its appearance being steady only when this speed is related in a definite way to the periodicity of the illumination; strobe lamp, strobe light, an electric light that can be made to flash on and off rapidly and automatically; also (U.S.), an electronic flash for a camera; so strobe-lighted, strobe-lit adjs.; strobe pulse (Electronics) (see quot. 1971).
1942Amer. Cinematographer Sept. 423/1 Check the strobe disc for synchronization. 1967Nature 23 Dec. 1173/1 The correct speed of a gramophone turn-table may be checked by viewing a strobe disk illuminated by electric light supplied by the a.c. mains.
1974Sci. Amer. Aug. 108/3 The solution of the problem of stopping fast action lies in an electronic flash lamp. The duration of most ‘strobe’ lamps owned by amateurs is about 5 × 10-4 second, which is sufficiently brief for many events of interest. 1975Gramophone Jan. 1297 (Advt.), Dots on the outer rim of the SR717 illuminated by the built-in strobe lamp.
1962N. Maxwell Witch-Doctor's Apprentice vi. 68 Augusto helped a lot, lugging the Strobe light and holding his flashlight so that I could check my camera settings. 1971R. Busby Deadlock vii. 98 Pulsating strobe lights left Leric with a fragmented picture of girls. 1978Sci. Amer. June 128/1 My best clue came from examining the floating drops under a strobe light set near the frequency of oscillation, so that the flashing light effectively slowed the vibration of the drops.
1979Listener 18 Oct. 517/3 A strobe-lighted production number that sends images flashing around the vast auditorium.
1967P. Welles Babyhip ii. 36 It's not everyone who can have a strob-lit [sic] dream of love. 1972Listener 23 June 845/1 Weird strobe-lit collages.
1946Jrnl. Inst. Electr. Engineers XCIII. iiia. 318/2 The operator had under his control a variable-range strobe pulse which he could bring into coincidence with the target echo. 1967Electronics 6 Mar. 117/1 (caption) The level detector senses the moment when Cint reaches zero volts and generates a strobe pulse. 1971Gloss. Electrotechnical, Power Terms (B.S.I.) iii. vi. 18 Strobe pulse, a pulse, of duration less than the period of a recurrent phenomenon, used for scrutinizing a particular epoch of that phenomenon... In radar, a strobe pulse is sometimes made to follow automatically the echo from a moving object.
B. n.
1. = strobe disc, sense A. 2 above.
1942Amer. Cinematographer Sept. 423/1 Watch the strobe for any changes in projector speed.
2. Electronics. = strobe pulse, sense A. 2 above.
1946Jrnl. Inst. Electr. Engineers XCIII. iiia. 319/1 In the A.I. Mark IV [radar] equipment, the search was a progressive outward movement of the strobe from zero to maximum range, followed by a rapid fly-back to zero. 1953Electronic Engin. XXV. 191/1 Photographing a c.r.o. trace using a reference waveform as a strobe. 1959Ibid. XXXI. 136/2 The X displacement may be dissociated from the phase of the strobe (time scale). 1980D. G. Green Digital Techniques & Systems iv. 49 The strobe determines the times at which the S and R input signals should be effective.
3. a. = strobe light, sense A. 2 above. b. Stroboscopic photography.
1949H. Luray Strobe v. 73 You will know which size flash bulb your strobe approximates. Ibid. vii. 101 Strobe is used outdoors very much like flash. 1962Amer. Jrnl. Physics XXX. 925/1 The strobe was flashing at three times the frequency of the wave. 1968J. D. MacDonald Pale Grey for Guilt (1969) xii. 153 Maybe the music got too loud... Maybe it was the strobes. 1975J. Rathbone Kill Cure ii. vi. 48 For one brief moment she saw the man full face, caught in the jerky light of the strobe.
▪ II. strobe, v.|strəʊb|
[f. prec.]
1. trans. Electronics. To gate (gate v.1 2 a) by means of a strobe pulse.
1947Wireless World Aug. 290/1 Work was also carried out on ‘strobing’ a portion of the time base. 1950[see gate v.1 2]. 1981Nashelsky & Boylestad Devices xi. 391 The output remains high unless strobed.
2. intr. Cinemat. and Television. To exhibit or give rise to strobing.
1959Halas & Manvell Technique Film Animation xix. 232 Fairly light colours do not strobe so much as white. 1965Punch 12 May 684/1 Before my very first TV appearance the studio manager tried to get me to change clothes with him... He then explained that the black and white check I was wearing would ‘strobe’—an optical illusion whereby the wearer of any pattern containing vertical or horizontal stripes appears to vibrate. 1982Observer 12 Dec. 26/3 Don't blink, don't sniff, don't stick your chin up, don't slouch, don't wave your hands about, don't wear stripes (they ‘strobe’), look at the person you're talking to, smile.
3. fig. (intr. and trans.) To flash.
1977R. E. Harrington Quintain vi. 53 Possible explanations flashed through his mind..thoughts strobing across his mind. 1980J. McNeil Spy Game ix. 103 The fire strobed rosy light onto the burnished yew furniture.
Hence strobed ppl. a.
1980D. C. Green Digital Techniques & Systems iv. 49 A clocked or strobed flip-flop will change only when a clock pulse is received. |