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

When derived from natural resins it is most often created out of labdanum.

When artificial intelligence came into existence in the 1960s, the field of computational linguistics became that sub-division of artificial intelligence dealing with human-level comprehension and production of natural languages.

When David has become old and bedridden, Adonijah, his eldest surviving son and natural heir, declares himself king and worthy to marry Abishag.

When populations within a species become isolated by geography, feeding strategy, mate selection, or other means, they may start to differ from other populations through genetic drift and natural selection, and over time may evolve into new species.

When natural resource management is applied to whole ecosystems, rather than single species, it is termed ecosystem management.

When used in anesthesia to produce and maintain unconsciousness, " sleep " is metaphorical as there are no regular sleep stages or cyclical natural states ; patients rarely recover from anesthesia feeling refreshed and with renewed energy.

When running at lower speeds, quenching is commonly observed in diesel ( compression ignition ) engines that run on natural gas.

When asked if she had any regrets about the way she spent her childhood, Dunst said: " Well, it's not a natural way to grow up, but it's the way I grew up and I wouldn't change it.

When viewed by zoologists and professors of natural history it was concluded that it showed a seal, possibly a grey seal.

When lowered the mast foot was kept in the base of the mast step and the top of the mast secured in a natural wooden crook about 1. 5 m-2. 5 m high, on the port side, so that it did not interfer with steering on the starboard side.

When he realizes that his applications of these laws don't work, he gives up his belief in natural law, in favor of a belief in personal gods controlling nature — thus giving rise to religious myths.

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 such mutations result in a higher fitness, natural selection will favor these phenotypes and the novel trait will spread in the population.

When the surface at Tulane Stadium switched from natural grass to PolyTurf in 1971, field temperatures became hotter still.

When news of the natural wonders of the Yellowstone were first promulgated, the land was part of a federally governed territory.

" David Gordon notes, " When most people speak of natural law, what they have in mind is the contention that morality can be derived from human nature.

When using a natural language to communicate with other people, human authors and speakers can be ambiguous and make small errors, and still expect their intent to be understood.

When a cultured pearl with bead is X-rayed, it reveals a different structure to that of a natural pearl.

When the fitness of a single genotype becomes meaningless because of the high rate of mutations, the cloud as a whole or quasispecies becomes the natural unit of selection.

# To complete one's unfinished sadhana: When an aspirant making spiritual efforts for liberation from maya dies without attaining his or her goal, the jiva gets as a natural cause-effect another human body to complete its sadhana.

When local area networks became widespread, it was natural that administrators and users would desire remote access to the news spool, and NNTP, the Network News Transfer Protocol, was developed to serve that need.

When a church was built over the spot in St Petersburg where Tsar Alexander II of Russia had been assassinated, the " Church of the Savior on Blood ", the natural style to use was one that best evoked traditional Russian features ( illustration, left ).

When science is done with an inclusion of intangible aspects of reality it is called natural philosophy.

When they arrive in Precipice, the couple have to abandon their normal " urban pattern " to see the ways in which the town's unique design merges public and private space, along with natural and artificial structures.

When I had my big job with the double headlights and yards of chrome, the gas people were happy to see me.

When clouds are present, the loss rate of SO < sub > 2 </ sub > is faster than can be explained by gas phase chemistry alone.

When certain ionic compounds containing bromine are mixed with potassium permanganate ( KMnO < sub > 4 </ sub >) and an acidic substance, they will form a pale brown cloud of bromine gas.

When the total vapor pressure reaches the pressure surrounding the liquid, boiling occurs and liquid turns to gas throughout the bulk of the liquid.

When a system, for example, n moles of a gas of volume V at pressure p and temperature T, is created or brought to its present state from absolute zero, energy must be supplied equal to its internal energy U plus pV, where pV is the work done in pushing against the ambient ( atmospheric ) pressure.

When the mask is used in a real scenario, or as part of a drill, there is 9 seconds to put the gas mask on and clear and seal.

When a protostar is formed from the collapse of a giant molecular cloud of gas and dust in the local interstellar medium, the initial composition is homogeneous throughout, consisting of about 70 % hydrogen, 28 % helium and trace amounts of other elements, by mass.

When measuring liquid pressure, a loop filled with gas or a light fluid can isolate the liquids to prevent them from mixing but this can be unnecessary, for example when mercury is used as the manometer fluid to measure differential pressure of a fluid such as water.

When this is true, the two phases will be in equilibrium, and the gas pressure will equal the equilibrium vapor pressure of the liquid ( or solid ).

When the deceleration sensors sense a potential crash, small explosive cartridges are triggered electrically and the resulting pressurized gas feeds into tiny Wankel engines which rotate to take up the slack in the seat belt systems, anchoring the driver and passengers firmly in the seat before a collision.

When stars are born, their birth is accompanied by a strong outward wind of gas and dust.

When this outflow of material eventually impacts the surrounding gas, the shock waves that are created compress and heat the gas.

When enough energy is deposited in a droplet by ionizing radiation the superheated droplet undergoes a phase transition and becomes a gas bubble.

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 the shaped charge detonates, most of its energy is focused on the steel plate, driving it forward and pushing the test gas ahead of it.

When close to a planet with a strong magnetosphere such as Earth or a gas giant, the magnetic sail could generate more thrust by interacting with the magnetosphere instead of the solar wind, and may therefore be more efficient.

When used for etching, ferric chloride does not produce a corrosive gas, as acids do, thus eliminating another danger of traditional etching.

When the surrounding gas and dust envelope disperses and accretion process stops, the star is considered a pre – main sequence star ( PMS star ).

When the working fluid is a gas that is compressed and expanded but doesn't change phase, the refrigeration cycle is called a gas cycle.

When the activation energy is given in molecular units instead of molar units, e. g., joules per molecule instead of joules per mole, the Boltzmann constant is used instead of the gas constant.

When a crash occurs the bladder inflates with a gas to increase the area of the restraint contacting the occupant and also shortening the length of the restraint to tighten the belt around the occupant, improving the protection.

When a binary system contains a compact object such as a white dwarf, neutron star or black hole, gas from the other ( donor ) star can accrete onto the compact object.