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When exposed to heat, moisture or acids in the film base begin to deteriorate to an unusable state, releasing acetic acid with a characteristic vinegary smell, causing the process to be known as " vinegar syndrome.
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When the first meeting of the Fourth Duma was convened in late 1912, only one out of six Bolshevik deputies, Matvei Muranov, ( another one, Roman Malinovsky, was later exposed as an Okhrana secret police agent ) voted to break away from the Menshevik faction within the Duma on 15 December 1912.
When the endocervix is exposed to the harsh acidic environment of the vagina it undergoes metaplasia to squamous epithelium which is better suited to the vaginal environment.
When exposed to sunlight, artificial light, or infrared radiation ( even the heat of a hand nearby can be enough ), the vanes turn with no apparent motive power, the dark sides retreating from the radiation source and the light sides advancing.
When these crystals are exposed to radiation, the dysprosium atoms become excited and luminescent.
When exposed to the ultraviolet rays of sunlight, many explosive compounds containing nitrogen groups rapidly decompose, affecting their stability.
When the Balts withstood outside threats, they exposed an irresolute Kremlin.
When the cannon was fired through the touchhole, turbulence from the initial surface combustion caused the rest of the powder to be rapidly exposed to the flame.
When exposed to the atmosphere, zinc reacts with oxygen to form zinc oxide, which further reacts with water molecules in the air to form zinc hydroxide.
When Cicero, who was consul that year, exposed Catiline's conspiracy to seize control of the republic, several senators accused Caesar of involvement in the plot.
When exposed to a magnetic field, the domain boundaries move so that the domains aligned with the magnetic field grow and dominate the structure as shown at the left.
When exposed to ultraviolet light, natural ergosterols in mushrooms produce vitamin D < sub > 2 </ sub >, a process now exploited for the functional food retail market.
When the dendritic cells are chronically exposed to morphine during their differentiation process then treated with LPS, the production of cytokines is different.
When exposed to antibiotics, most bacteria die quickly, but some may have mutations that make them slightly less susceptible.
When Operation Deadlight was activated, it was found that many of the U-boats were in an extremely poor condition as a result of being moored in exposed harbours while awaiting disposal.
When exposed to nitrogen clean titanium metal is covered with a titanium nitride layer.
When isolated, it resembles tin, but discolors when exposed to air.
During the temporary absence of the two men, she meets Cecily, each woman indignantly declaring that she is the one engaged to “ Ernest .” When Jack and Algernon reappear, their deceptions are exposed.
When a designer, engineer, or user decides to use a valve for an application, he / she should ensure the rated maximum temperature and pressure are never exceeded and that the wetted materials are compatible with the fluid the valve interior is exposed to.
When a crystal is mounted and exposed to an intense beam of X-rays, it scatters the X-rays into a pattern of spots or reflections that can be observed on a screen behind the crystal.
When UF < sub > 6 </ sub > is exposed to water vapor in the air, it reacts with the moisture to produce UO < sub > 2 </ sub > F < sub > 2 </ sub > ( uranyl fluoride ), a solid, and HF ( hydrogen fluoride ), a gas, both of which are highly soluble and toxic.
When these methods were used, a number of false stigmatics were exposed.
When the exposed surface reaches a temperature of about 30, 000 K, there are enough ultraviolet photons being emitted to ionize the ejected atmosphere, making it glow.
When that mixture has dried, the metal stylus is used on the plate and thereby removes some of the grit particles, so that minuscule areas of copper are exposed to the acid and etched ; they will eventually hold the ink for the printing process.
When filming on location around the world, Quinn was exposed to regional contemporary art styles exhibited at local galleries and studied art history in each area.
When the plug bevel contact is released, the two regions are exposed to each other.
When and heat
When heat is applied the components react and cross-link.
When heat and pressure are applied to the layers, a chemical reaction ( polymerization ) transforms the layers into a high-pressure thermosetting industrial laminated plastic.
When this gene was inserted into tomato and tobacco cells ( see RNA interference ), the cells were able to withstand environmental stresses like salt, drought, cold and heat, far more than ordinary cells.
When heat is used in the preparation of food, it can kill or inactivate potentially harmful organisms, such as bacteria and viruses, as well as various parasites such as tapeworms and Toxoplasma gondii.
When the heat release oscillations are in phase with the pressure oscillations, the Rayleigh Index is positive and the magnitude of the thermo acoustic instability is maximised.
When a radiant energy source is directed at a Crookes radiometer, the radiometer becomes a heat engine.
When a small increment of heat is gained by a calorimetric body, with small increments, of its volume, and of its temperature, the increment of heat,, gained by the body of calorimetric material, is given by
When both were prepared for flight, Daedalus warned Icarus not to fly too high, because the heat of the sun would melt the wax, nor too low, because the sea foam would soak the feathers.
When brought to a boil, the steam produced in the lower pot transfers heat to the upper pot.
When surfaces in contact move relative to each other, the friction between the two surfaces converts kinetic energy into heat.
"," When the engine absorbs heat energy, the absorbed heat energy comes with entropy.
" ( heat energy ), " When the engine performs work, on the other hand, no entropy leaves the engine.
When heat is added to a thermal system, the change in entropy is the increase in mass-energy divided by temperature:
When heat is applied to the meat a chemical reaction happens that turns the hemoglobin white.
When this insulation is insufficient to maintain body temperature, they may resort to shivering -- rapid muscle contractions that quickly use up ATP, thus stimulating cellular metabolism to replace it and consequently produce more heat.
When workers from the William Beardmore and Company Steel Works in Glasgow were dying from the large amounts of beer drunk to quench their thirst from the heat of the steel works, an alternative was sought.
When ice melts, it absorbs as much energy as it would take to heat an equivalent mass of water by 80 ° C.
When the blade of an ice skate passes over the ice, the ice undergoes two kinds of changes in its physical state and a change in temperature due to kinetic friction and the heat of melting.
When an electron absorbs energy either from light ( photons ) or heat ( phonons ), it receives that incident quantum of energy.
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 thrown against a hard surface, the glass would shatter and the contents would instantly ignite, liberating choking fumes of phosphorus pentoxide and sulphur dioxide as well as producing a great deal of heat.
When the Union Internationale Motonautique, the world governing authority for powerboat racing, introduced the World Offshore Championship in 1967 as a memorial to Sam Griffith, the American founder of modern offshore racing, the course was found to be too short at to qualify as a championship heat.
0.117 seconds.