What's the difference between flash and scintillation?
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.
Scintillation
Definition:
(n.) The act of scintillating.
(n.) A spark or flash emitted in scintillating.
Example Sentences:
(1) Radioactivity attained in different tissues at different times after a single intraperitoneal injection of 3H-gentamicin into male rats was determined using scintillation counting.
(2) An accurate and reproducible method is described for generating a map of the cobalt sheet source from images of it made in multiple positions with the scintillation camera.
(3) (The scintillation medium is preheated with ethanolamine to eliminate chemiluminescence.)
(4) [8(-14)C]Inosine monophosphate formed was separated by high-voltage electrophoresis and radioactivity was measured by liquid-scintillation counting.
(5) With liquid scintillation counting after two-dimensional gel electrophoresis it is possible to estimate the proportion of species-specific ribosomal protein in a mouse-hamster somatic cell hybrid.
(6) Plasma data and scintillation camera images obtained from patients receiving either 1, 50, or 100 mg of monoclonal antibody indicated dose-dependent (i.e., saturable) kinetics.
(7) Features of this spectrometer which make it more suitable than the previously employed scintillation spectrometers for the observation of granulocyte and other chemiluminescent systems include; (1) the ability to measure CL immediately upon reaction initiation; (2) simplicity of photomultiplier tube exchange; and (3) built-in optical filter holders for spectral analysis.
(8) A simple scanning apparatus, similar to that used in a hand-held scintillation probe, was compared with simultaneous measurements made by a gamma camera in 16 healthy males.
(9) We conclude that analog motion correction should be provided in all scintillation cameras used for liver scintigraphy.
(10) To investigate the potential application of radionuclide computed tomography (RCT) to nuclear medicine imaging using 99mTc, a tomographic system using a lightweight scintillation camera for brain imaging was constructed, and lesion contrast with RCT and conventional scintigraphy were compared.
(11) Larger detectors with converging collimation result in much higher photon input rates to the scintillation crystal in routine clinical studies than has occurred in the past.
(12) Samples were assayed using liquid scintillation counting and the iodoantipyrine results were regressed against the butanol results.
(13) A device based on an 8080 microprocessor was assembled for the generation of image data in a manner similar to that of the scintillation camera.
(14) Graft segments, effluents, and seeding suspension were assayed in a beta scintillation counter.
(15) Metabolism of 2-aminofluorene was measured both colorimetrically (formation of a reduced iron chelate from the N-hydroxyfluorene metabolite) and radiochemically (separation of 3H-metabolites by high performance liquid chromatography and quantitation by scintillation counting).
(16) The bioluminescence marker was expressed in the presence of n-decanal, and was monitored as chemiluminescence in a liquid scintillation counter.
(17) The migration of the donor lymphocytes was followed by labeling them in vitro with either [3H] or [14C]uridine and measuring radioactivity by scintillation counting of the spleen and lymph nodes of the recipients removed 24 h after injection and in TDL collected throughout this period.
(18) By utilizing the gamma-emitting isotope of selenium, Se-(8-azidoadenosyl)[75Se]selenomethionine eliminates the need for the impregnation of acrylamide gels with fluorographic enhancers and dilution of liquid samples into scintillation cocktails, as is required with the commonly used methyl-3H-labeled and 35S-labeled S-(8-azidoadenosyl)methionine.
(19) Of 116 patients who had undergone combined liver-lung scintillation imaging, 23 with negative studies had abnormal subphrenic spaces at operation, and 5 with positive studies had abnormal subphrenic spaces at laparotomy (hematomas, bile spillage, serous fluid or abscess); 4 of 6 nonexplored positive studdies showed resolution of defects on serial imaging.
(20) Elution with 2 X 5 ml of 0.1 M sodium chloride in 5 mM ammonium acetate removes all of the orotate and leaves all of the product orotidine monophosphate (OMP) bound so that it may be measured in a scintillation counter.