When this happens, the carbon atoms are said to be in solution, or mixed with the iron, forming a single, homogeneous, crystalline phase called austenite.

When the pH of this solution rises, as a result of dilution by fresh water, these ions precipitate, forming " Yellow Boy " pollution.

When a metal wire is subjected to electric force applied on its opposite ends, these free electrons rush in the direction of the force, thus forming what we call an electric current.

When timber was available, many were surrounded by a circle of wooden piles with axe-sharpened bases that were driven into the bottom, forming a circular enclosure that helped to retain the main mound and prevent erosion.

When zone heater is moving from the top to the bottom of the container then solid condensate with irregular impurity distribution is forming.

When both the fronts and sides of a building are drawn, then the parallel lines forming a side converge at a second point along the horizon ( which may be off the drawing paper.

When oxygen is not bound, a very weakly bonded water molecule fills the site, forming a distorted octahedron.

When bone marrow develops, it eventually assumes the task of forming most of the blood cells for the entire organism.

When sodium ( Na ) and chlorine ( Cl ) are combined, the sodium atoms each lose an electron, forming cations ( Na < sup >+</ sup >), and the chlorine atoms each gain an electron to form anions ( Cl < sup >−</ sup >).

When a key is pressed, the foil tightly clings to the surface of the PC board, forming a daisy chain of two capacitors between contact pads and itself separated with thin soldermask, and thus " shorting " the contact pads with an easily detectable drop of capacitive reactance between them.

When temperature is changed one of the phases grows, forming different morphologies depending on the temperature change.

When a meteoroid enters the atmosphere, frictional, pressure, and chemical interactions with the atmospheric gasses cause the body to heat up and emit light, thus forming a fireball, also known as a meteor or shooting / falling star.

When they knew that Marcus Junius Brutus and Gaius Cassius were assembling an army in order to march on Rome, Antony, Octavian and Lepidus allied in November 43 BC, forming the Second Triumvirate to stop Caesar's assassins.

When the water in paint media touches parchment's surface, the collagen melts slightly, forming a raised bed for the paint, a quality highly prized by some artists.

When a party becomes the largest party not to be represented in a Westminster-style parliament, the party's parliamentary group forms the Official Opposition, with Official Opposition frontbench team members often forming the Official Opposition Shadow cabinet.

When the country could not reconcile the issue of slavery and the federal union, the southern Presbyterians split from the original PCUSA, forming the Presbyterian Church in the Confederate States of America in 1861, which became the Presbyterian Church in the United States after the American Civil War.

When powdery, snow moves with the wind from the location where it originally landed, forming deposits called snowdrifts which may have a depth of several meters.

When fluid dissects into the surrounding white matter forming a cystic cavity or syrinx, the term syringomyelia is applied.

When the plastic is cool, the carbon grains are all in contact with each other, forming a conductive path through the device.

When two plates move or collide with each other, vast land areas are uplifted, forming mountains.

When light is transmitted through a layer of magneto-optic material, the result is called the Faraday effect: the plane of polarization can be rotated, forming a Faraday rotator.

When these organisms die their skeletons sink to the bottom, forming a thick layer of calcareous mud that may lithify into limestone.

When sedimentary strata accumulate through time, the environment can shift, forming a change in facies in the subsurface at one location.

When the basin grows due to continued stretching of the lithosphere, the rift grows and the sea can enter, forming marine deposits.

When they were closer and he saw that one was a woman, he was more puzzled than ever.

When one of the men in the hall behind us spat on the floor and scraped his boot over the gob of spittle I noticed how the clerk winced.

When they reached their neighbor's house, Pamela said a few polite words to Grace and kissed Melissa lightly on the forehead, the impulse prompted by a stray thought -- of the type to which she was frequently subject these days -- that they might never see one another again.

When he added to his Pittsburgh commitments the directorship of the London Philharmonic Orchestra in 1958, he conducted one hundred fifty concerts within nine months, `` commuting '' between the two cities.

When confronted with a drunk or an insane person I have no notion of what any one of them might do to me or to himself or to others.

When Fred wheeled him back into his room, the big one looking out on the back porch, and put him to bed, Papa told him he was very tired but that he had enjoyed greatly the trip downtown.

When he came home from his office at the end of the afternoon, Breasted never knew what gathering he should expect to find, but there almost always was one.

When it was not, one of the great dramas of Washington would be presented.

When one powerful nation strives to emulate the success of another, it is only natural.

When he was in the war, he was in Law or Supplies or something like that, and an old buddy of his told me he would come down on Sundays to the Pentagon and read the citations for medals -- just like the one we sent in for Trig -- and go away with a real glow.

When something unexpected happened, one always asked for water if one were a woman, brandy if one were a man.

When enough time had elapsed so that there was little likelihood of his returning for something he had forgotten, Harold went out into the hall and stood looking into one room after another.

When he was bent over behind the wheel of the station wagon, feeling in his trouser cuffs for the ignition key which he had dropped a moment before, she came out of the house with an enormous Rumanian shawl over her head, which she had bought in that country during one of their trips abroad, and handed him a clean handkerchief through the window.

When in one letter Jessica informed me that her father did not like the idea of her going out alone on New Year's Eve, I knew for a moment an immense relief ; ;

When he showed this model as his `` solution '' as to how the Howe sewing machine operated, he was told he was `` wrong '', and discovered to his amazement that the Howe Machine, which was unknown to him in detail, used two threads while the one that he had perfected used only one.

When it is needed, one formula is as important as another.

When mold has more than one design cavity, make individual paper patterns.

When changing from one color to another, whether working on right or wrong side, pick up the new strand from underneath dropped strand.

`` When working from one of my sketches I square it up and project its linear form freehand to the watercolor sheet with charcoal.

When he had left, I could never remember whether he had poked them in their middles, laughingly, with a thick index finger or whether he was merely so much the sort of person who did this that one assumed the action, not bothering to look.

When this experiment is viewed as composed of five binomial trials, one for each member of the family, the outcomes of the trials are obviously not independent.

When now we count the frequency of the 71 items in the two language families appearing in the same column or grade, or one column or grade apart, or two or three or four, we find these differences: Af