Puddling

Fig. 2. (a) Puddle coater (b) roll appHcator blade coater (c) fountain blade coater. 

Simultaneous coatings can also be made with one flexible blade against a roU, where the web moves downward and suppHes the coating fluid with puddles and edge dams between the web and the blade and between the web and the roU. The roU may rotate faster than the web. Figure 5 shows a version where the fluid on the roU side is suppHed by a transfer roU. 

Avoid walking through diseolored areas or puddles, leaning on drums, or eontaeting anything that is likely to be eontaminated. 

Eisen-frischerie,/. iron refinery iron refining, puddling, -frischflammofen, m. puddling furnace, -frischschlacke,/. finery cinders. 

Fein-probe, /. delicate test, -prozess, m. refining process, -puddeln, n. (Metal.) refining puddling. 

Metal.) gas puddling, gasfuhrend, a. containing gas. gassy. GasgeblMse, n. gas blast gas blast apparatus, gas-gefeuert, a. gas-fired, gas-heated, -ge-ftillt, a. gas-filled. 

Haken. m. hook clasp, catch Puddling) rabble. 

Luppe,/. Metal.) bloom, loop, lump, ball. Luppen-eisen, n. ball iron, puddled iron, -frischfeuer, n. bloomery fire, -frischbtitte, /. bloomery. -stahl, m. bloom steel, steel in blooms. 

Pfiitze,/, pool, puddle, wallow, pH, abbrev. pH, pn (symbol for hydrogen-ion concentration) (pro Hundert) per cent, phagedanisches Wasser. (Pharm.) yellow mercurial lotion. 

Puddel-arbeiter, m. puddler. -bett, n. Pud-delsohle. -eisen, n. puddled iron, -luppe, /. puddle-ball, puddeln, v.t. puddle. 

Ruhr-fass, n. churn (J/ to/.) dolly tub. -form, /. form or shape of stirrer, -frischen, n. (Metal.) puddling. -geschwindigkeit, /. velocity of stirring. -tUikchen, n. small stirring hook, -haken, m. stirring implement, rake, rabble, poker, -holz, n. wooden stirrer, stirring stick, paddle. 

Sehnepuddeln, n. puddling of fibrous iron. Sehnerv, m. optic nerve. 

Umrfihren, n. stirring, stirring up, specif. Iron) puddling, Copper) poling. 

Verplatinierung,/. platinization. verphnen, v.t. forbid, verpuddeln, v.t. puddle. 

Yes, there is a Stevie Wonder revival going on, and Mr. Wonder s Songs in the Key of Life faded on Turntable A into more funk-hop from the 1970s on B, as people negotiated little puddles of funny-flavored sake in little ceramic cups and carafes. 

Let us consider a circular puddle of liquid, L, on solid, S, in the presence of liquid vapor, V. The puddle is of radius Rq and small initial thickness Bq. We assume that holes nucleate spontaneously in the puddle and grow with radius r(t) as time t passes because the equilibrium contact angle. Go, is nonzero. The liquid is unstable as a wetting film. Equilibrium thickness of a film, < is given by [27,28]... 

The technique used to study dewetting dynamics on materials consists of making a flat, smooth elastomer surface. A hquid puddle is deposited within a 50-mm-diameter ring of 0.1-mm-thick plasticized adhesive paper adhering to the substrate. The adhesive paper acts as a spacer. A microscope slide is drawn over the liquid to obtain a liquid film of ca. 0.1-mm thickness. At this thickness, the liquid film is unstable, being much less than the equilibrium value, of ca. 1.5 mm calculated from Eq. (29). Nucleation of dry patches... 

C02-0004. After a summer shower, rain puddles on the road quickly disappear. Describe what happens in molecular terms. 

After a rainfall, puddles of water slowly disappear. The higher the temperature, the faster the puddles vanish. Puddles disappear because water molecules move from the liquid phase to the gas phase through evaporation. Evaporation is common to all substances in condensed phases, not Just to water. We use the term vapor to describe a gaseous substance that forms by evaporation. Evaporation from bodies of water guarantees that the Earth s atmosphere always contains water vapor. 

Our senses tell us that molecules escape from a liquid. The red gas phase above the liquid bromine in Figure 11-4 shows that bromine molecules are in both phases. The evaporation of a rain puddle in the sunshine shows that water molecules escape from the liquid into the gas phase. The smell of gasoline around an open tank informs our noses that gasoline molecules escape from the liquid phase into the gas phase. 

C14-0034. Describe the dispersals and constraints that accompany the following processes (a) Ocean waves wash away a sand castle, (b) Water and acetone, two liquids, mix to form a homogeneous liquid solution, (c) In the child s game pick up sticks, a bundle of sticks is dropped to the floor, (d) Water evaporates from a puddle after a summer shower. 

Vapor pressure provides a simple illustration of why adding a pure liquid or solid does not change equilibrium concentrations. Recall from Chapter H that any liquid establishes a dynamic equilibrium with its vapor, and the partial pressure of the vapor at equilibrium is the vapor pressure. The vapor pressure is independent of the amount of liquid present. Figure 16-8 illustrates that the vapor pressure of water above a small puddle is the same as the vapor pressure above a large pond at the same temperature. More molecules escape from the larger surface of the pond, but more molecules are captured, too. The balance between captures and escapes is the same for both puddle and pond. 

I jumped down from the bench, picked up Smokey Bear from the puddle he was lying in, and sat him in the sun to dry. This was interesting. I ll show you. ... 

Come down, there s ammonia, he called to Hermann Staudinger, whose office was upstairs. Sure enough, at the bottom of Haber s flask sat a little puddle of ammonia the size of a scant teaspoonful. It was not precisely pouring out, but it was enough to amaze the chemists. 

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