What's the difference between blackening and darkening?
Blackening
Definition:
(p. pr. & vb. n.) of Blacken
Example Sentences:
(1) At the end of each session, he is forced to don a pair of blackened goggles, ear muffs are placed over his head, and he is ordered to place the palms of his hands together so that a guard can grasp his thumbs to lead him away.
(2) The purpose of the present study was to analyze the influence of various storing principles, film speed, and distance from X-ray source upon the degree of film blackening.
(3) Grilled Grill herring with a little oil and salt and the skin will blacken and crisp to reveal a creamy delicious flesh inside.
(4) The only reminder of what happened is a small, blackened, crater near the northern part of town, where a rocket laced with a nerve agent fell, killing more than 70 people in one of the worst mass casualty chemical attacks in the six-year war in Syria .
(5) People brought flowers, and large piles of roses, lilac, tulips and carnations lay by the blackened doors.
(6) Quantitative evaluation of the autoradiographs is achieved by careful calibration of the X-ray film blackening.
(7) Addition of xylose (4.0 g) and L-lysine hydrochloride (5.4 g) to the above formulation improved differentiation between Salmonella and the few Citrobacter strains that grew and produced more intense blackening in Salmonella colonies.
(8) The Spanish classic arroz negro pays homage to both old country and new: instead of the standard squid ink and fish stock, it’s made with crab bisque and chilmole (the blackened chilli sauce of the Yucatán) and crowned with calamari stuffed with pork scratchings.
(9) In animals given the drug alone, there was dermatitis and blackening of the skin and hair, serum glutamic oxalacetic transaminase and serum glutamic pyruvic transaminase enzymes were significantly increased, and liver biopsy revealed diffuse cytoplasmic swelling and granulation of the hepatocytes.
(10) Nine screen-film combinations were exposed at 70 to 80 kv., using a 12-pulse generator and Bucky grid till blackening of S = 1 was obtained.
(11) The ability to recognise detail related to detail size, film blackening and exposure geometry was studied for various systems, and the quality profiles are discussed.
(12) He was knocked to the ground with a rifle butt, which blackened his left eye.
(13) 12 patients showed isolated mucosal inflammation, 5 blackish deposits (of impacted soot) and blisters in 6 (with shreds of mucosa hanging loose); the endoscopy was normal in 18; 66% of those with blisters (4 cases out of 6) and 40% with blackened mucosa (2 cases out of 5) were observed in burns from fires.
(14) Other anaerobes, Enterobacteriaceae, and enterococci either failed to grow on BBE agar or did not produce the characteristic morphology and blackening associated with isolates of the B. fragilis group.
(15) But those crows also gather on the blackened rafters of British-era bungalows, while tanks and artillery pieces on which the wealth of a poor nation was squandered for decades sit rusting on hilltops.
(16) Whole-body autoradiography, combined with densitometric measurement of the blackening of the autoradiograms, and liquid scintillation counting were used to determine the levels of radioactivity in the inner ear in relation to blood and other tissues.
(17) Another selection strategy performed by the instrument involves growing the cells on a thin, blackened polyester film which can be cut by the argon laser beam.
(18) We describe a typical case with photographs demonstrating multiple blackened hyperkeratotic lesions of the palmar aspects of the fingers and palm, some linear, some circular.
(19) And yet, comparing British casualty rates with those of France, Germany and Italy, Haig's reputation looks to have been disproportionately blackened.
(20) Such inexpensive devices are cost effective alternatives to blackened surgical instruments.
Darkening
Definition:
(p. pr. & vb. n.) of Darken
(n.) Twilight; gloaming.
Example Sentences:
(1) Immediate pigment darkening (IPD) occurs in human skin upon exposure to ultraviolet-A and visible radiation.
(2) There would never be a meeting in a darkened room where a winner was chosen just to fit an audience demographic or to create more entertaining telly.
(3) Each subject sat for 6 minutes in a darkened room and was told to memorize a list of words she heard form a tape.
(4) Normal, refractile spores were produced in each case; a portion of the barium spores lost refractility and darkened.
(5) Instead of coming to the bank, where we would be photographed coming in the front door, we were all to meet outside the McDonald's in Liverpool Street where we would be picked up in a people-carrier with darkened windows and driven in through the back of the bank.
(6) The final stage of germination was characterized by changes in the central spore region (core), notably phase darkening of the spore center and stainability with mercurochrome, and by a slight additional absorbancy decrease.
(7) Confluent patches of flat pigmentation appeared over the palpebral conjunctiva 18 weeks after the onset of treatment and showed progressive lateral enlargement and darkening.
(8) The 16 sites were qualitatively examined for evidence of resorption by either thinning or darkening of bone relative to the time immediately following surgery.
(9) Today's matches take place in a darkened hall within the stadium's towering walls, on the battlefields of multimillion-selling first-person shoot-'em-up Call of Duty .
(10) alpha-Melanocyte stimulating hormone (alpha-MSH) is a linear tridecapeptide (Ac-Ser-Tyr-Ser-Met-Glu-His-Phe-Arg-Trp-Gly-Lys-Pro-Val-NH2) that has diverse physiological functions in addition to its reversible darkening of amphibian skins by stimulating melanosome dispersion within melanophores.
(11) 1) Asphyxia induced marked body colour darkening and bradycardia.
(12) The most striking feature of such neurons was darkening of their dendrites associated with abnormally high density cytoplasm that contained mitochondria with disrupted cristae.
(13) Braving darkening skies, they were initially in an upbeat mood, belting out the samba rhythm of carnival classic I'm Going to Celebrate.
(14) With official unemployment data today expected to show a further rise in the long-term unemployed, the TUC argues young people were some of the worst affected by Britain's deep recession and their outlook could darken further as public sector job losses intensify.
(15) beta-Adrenoceptor blocking agents, in contrast, inhibit catecholamine-induced darkening but have no effect on MSH-induced darkening.
(16) During the hibernation period, the epiphyseal catecholamine charge is well detected in the garden dormouse; it appears more important in darkened animals at 22 degrees C and much less in animals under continuous lighting.
(17) Melanocyte stimulating hormone-induced darkening or dispersion of the granules was reversed by each of these metabolites.
(18) Reactivation of the enzyme extracted from darkened leaves was achieved simply by adding a thiol compound.
(19) By analyzing the synaptic relationships of such "darkened" dendrites, connections in the upper dorsal horn can be deciphered.
(20) The specific activity of the light enzyme was consistently about twice that of the dark form when assayed at suboptimal (but physiological) pH (pH 7.0-7.3), and the former was also less sensitive to feedback inhibition by L-malate than that from darkened leaves under various conditions.