What's the difference between flash and flicker?

Flash


Definition:

  • (v. i.) To burst or break forth with a sudden and transient flood of flame and light; as, the lighting flashes vividly; the powder flashed.
  • (v. i.) To break forth, as a sudden flood of light; to burst instantly and brightly on the sight; to show a momentary brilliancy; to come or pass like a flash.
  • (v. i.) To burst forth like a sudden flame; to break out violently; to rush hastily.
  • (v. t.) To send out in flashes; to cause to burst forth with sudden flame or light.
  • (v. t.) To convey as by a flash; to light up, as by a sudden flame or light; as, to flash a message along the wires; to flash conviction on the mind.
  • (v. t.) To cover with a thin layer, as objects of glass with glass of a different color. See Flashing, n., 3 (b).
  • (n.) To trick up in a showy manner.
  • (n.) To strike and throw up large bodies of water from the surface; to splash.
  • (n.) A sudden burst of light; a flood of light instantaneously appearing and disappearing; a momentary blaze; as, a flash of lightning.
  • (n.) A sudden and brilliant burst, as of wit or genius; a momentary brightness or show.
  • (n.) The time during which a flash is visible; an instant; a very brief period.
  • (n.) A preparation of capsicum, burnt sugar, etc., for coloring and giving a fictious strength to liquors.
  • (a.) Showy, but counterfeit; cheap, pretentious, and vulgar; as, flash jewelry; flash finery.
  • (a.) Wearing showy, counterfeit ornaments; vulgarly pretentious; as, flash people; flash men or women; -- applied especially to thieves, gamblers, and prostitutes that dress in a showy way and wear much cheap jewelry.
  • (n.) Slang or cant of thieves and prostitutes.
  • (n.) A pool.
  • (n.) A reservoir and sluiceway beside a navigable stream, just above a shoal, so that the stream may pour in water as boats pass, and thus bear them over the shoal.

Example Sentences:

  • (1) Osman had gone close before that, flashing a shot over from seven yards after a corner.
  • (2) The data indicate that hot flashes may start much earlier and continue far longer than is commonly recognized by physicians or acknowledged in textbooks of gynecology.
  • (3) 'frequent' and probability of 'rare' flashes was 20%.
  • (4) All are satisfied by [Formula: see text], where N is the size of rod signal, constant for threshold; theta, theta(D) are steady backgrounds of light and receptor noise; varphi is the threshold flash with sigma a constant of about 2.5 log td sec; B the fraction of pigment in the bleached state.
  • (5) The flash visually evoked cortical potential (VECP) was recorded in 18 human albinos.
  • (6) The mixed-valence-state cytochrome oxidase mixed with O2 at -24 degrees C and flash-photolysed at -60 to -100 degrees C reacts with O2 and initially forms an oxy compound (A2) similar to that formed from the fully reduced state (A1).
  • (7) Dementia produced a slowing of the major positive (P2) component of the flash VEP but did not affect the latency of the flash P1 component or the P100 pattern-reversal component.
  • (8) We have investigated the relationship between rhodopsin photochemical function and the retinal rod outer segment (ROS) disk membrane lipid composition using flash photolysis techniques.
  • (9) The signal recovers rapidly (approximately 90 s) and can be repeated in a succession of flashes.
  • (10) Repeated flashes above a few per second do not so much cause fatigue of the VEPs as reduce or prevent them by a sustained inhibition; large late waves are released as a rebound excitation any time the train of flashes stops or is delayed or sufficiently weakened.
  • (11) Three types of behavior of the compound eye of Daphnia magna are characterized: 'flick', a transient rotation elicited by a brief flash of light; 'fixation', a maintained eye orientation in response to a stationary light stimulus of long-duration; 'tracking', the smooth pursuit of a moving stimulus.
  • (12) The instrument is based on an established procedure for dark adaptation measurement in which the subject continuously adjusts the threshold luminance of a recurrently flashing stimulus.
  • (13) Justice League, a followup to Dawn of Justice featuring Batman, Superman and Wonder Woman, arrives in May 2017, with a film starring Flash and the Green Lantern debuting the following Christmas.
  • (14) A 300 mus decay component of ESR Signal I (P-700+) in chloroplasts is observed following a 10 mus actinic xenon flash.
  • (15) A comparative study is made, at 15 degrees C, of flash-induced absorption changes around 820 nm (attributed to the primary donors of Photosystems I and II) and 705 nm (Photosystem I only), in normal chloroplasts and in chloroplasts where O2 evolution was inhibited by low pH or by Tris-treatment.
  • (16) In the presence of dextran sulphate the recombination of hemoglobin with carbon monoxide after flash photolysis is biphasic and the fraction of quickly reacting material increases with dilution of the protein.
  • (17) For all its posing and grooming, there are no nightclubs - the only flashing lights along this coast are the glowworms strobing across the grass at dusk.
  • (18) It was a wonderful piece of close control from Cassano, taking out two defenders in one movement, and Balotelli was quicker and more decisive than his marker, Holger Badstuber, to flash his header past Neuer.
  • (19) The visibility of a 1 degree, 200-msec flash on a large yellow field was measured as a function of the intensity of a coincident pedestal flash (a flash that was the same in both temporal intervals of a two-alternative forced-choice trial).
  • (20) The mean firing rates were significantly altered by either electrical or flash stimuli repeated 500 times at 0.97 Hz in those units which showed no transitory response.

Flicker


Definition:

  • (v. i.) To flutter; to flap the wings without flying.
  • (v. i.) To waver unsteadily, like a flame in a current of air, or when about to expire; as, the flickering light.
  • (n.) The act of wavering or of fluttering; flucuation; sudden and brief increase of brightness; as, the last flicker of the dying flame.
  • (n.) The golden-winged woodpecker (Colaptes aurutus); -- so called from its spring note. Called also yellow-hammer, high-holder, pigeon woodpecker, and yucca.

Example Sentences:

  • (1) Indirect blood pressure measurement techniques included automated oscillometry, manual auscultation, visual onset of oscillation (flicker) and return-to-flow methods.
  • (2) The flickers, similar in nature to the flickers observed for physiological channels, were of the order of 1 ms and the interval between flickers was of the order of 50 ms.
  • (3) I watched as she made the briefest eye contact with me on their way back, the flicker of hurt and sadness in her eyes reflecting mine, before the shutters came down.
  • (4) The characteristics of pattern and flicker (movement) detection are compared to electrophysiological studies on X (sustained) and Y (transient) neurones respectively, and correlations are described for studies of temporal frequency response, non-linearity, width of receptive field, strength of the inhibitory surround and motion sensitivity.
  • (5) The performance tests included tracking, choice reaction, flicker fusion, exophoria, nystagmus, digit symbol substitution and the subjective assessment of mood.
  • (6) Psychometric performance parameters and the critical flicker-fusion frequency are studied in various groups and in patients with chronic cerebral circulation trouble.
  • (7) It caused alpha-adrenergic stimulation (blood pressure and pupil diameter) and central nervous system excitation (critical flicker frequency), both of which were more marked in males than in females.
  • (8) Only two eyes showed a definite alteration in optic disc anatomy without the development of field loss, and field defects appeared in only one of 109 eyes in which there was no change or suspected change on flicker comparison.
  • (9) There were flickers for Alberto Moreno and Origi straight away, Lallana looped a header off target and Jordan Henderson got the better of Aké before seeing Heurelho Gomes tip over his shot.
  • (10) Twenty-four male graduate volunteers were administered a battery of psychological tests--critical flicker fusion (CFF; alternate and simultaneous), reaction time (simple and choice), memory (forward and backward), and associative recall--to ascertain their performance capability during the different times of day.
  • (11) At positive applied voltages, TeTx channels flicker continuously between a closed state and the various distinct open states.
  • (12) The luminance threshold for the detection of 25 Hz flicker was measured in nine patients with retinal disorders under stimulus conditions that have been shown previously to involve an interaction between rod and cone systems.
  • (13) The results obtained by flicker were compared with those reported on the responses evoked by different visual stimuli.
  • (14) The future development of perimetry will be characterized by a refinement of measured value statistics and the testing of perimetric procedures that test more complex physiological functions than sensitivity to differences (e.g., analysis of temporal transmission characteristics in flicker perimetry.
  • (15) For patients sensitive at normal viewing distances, where 50 Hz diffuse flicker appeared to be responsible for the induction of paroxysmal activity, the probability with which paroxysmal activity was induced was closely related to the subtense of the screen.
  • (16) Fourteen patients with symptoms of acute unilateral optic neuritis were examined with the Pulfrich test and the Aulhorn flicker test.
  • (17) Visual discomfort has been related to 1) the presence of flicker; the possibility to regulate, 2) brightness, 3) height; and 4) inclination of monitor.
  • (18) High ambient temperature had no significant effect on critical flicker fusion frequency.
  • (19) (1) Annular stimulation of rods slightly facilitated rod-mediated flicker sensitivity to frequencies less than 10 Hz.
  • (20) The result was good news for the north-east generally as Newcastle’s flickering hopes of escaping the drop were also given the faintest breath of oxygen.

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