The test object is instrumented with a sensitive balance to measure the forces generated by airflow ; or, the airflow may have smoke or other substances injected to make the flow lines around the object visible.

A smoke test determines whether it is possible to continue testing, as opposed to whether it is reasonable.

A software smoke test determines whether the program launches and whether its interfaces are accessible and responsive ( for example, the responsiveness of a web page or an input button ).

If the smoke test fails, it is impossible to conduct a sanity test.

After a smoke test proves that " the pipes will not leak, the keys seal properly, the circuit will not burn, or the software will not crash outright ," the system is ready for more stressful testing.

The plumbing industry started using the smoke test in 1875.

Later this usage seems to have been forgotten, leading some to believe the term originated in the electronics industry: " The phrase smoke test comes from hardware testing.

In plumbing a smoke test forces non-toxic, artificially created smoke through waste and drain pipes under a slight pressure to find leaks.

In woodwind instrument repair, a smoke test involves plugging one end of an instrument and blowing smoke into the other to test for leaks.

After this test the instrument is cleaned to remove nicotine and other deposits left by the smoke.

Due to tobacco smoke being used, this test may be hazardous to the health of the technician in the long run.

In infectious disease control a smoke test is done to see whether a room is under negative pressure.

In the entertainment industry a smoke test is done to ensure that theatrical smoke and fog used during a live event will not set off the smoke detectors in a venue.

To smoke test a venue the venue is filled to the full capacity with smoke to see if there are any smoke detectors still live, or if there are any leaks of smoke from the venue sufficient to set off detectors in other parts of the venue being tested.

A female dragon named Delphyne ( δελφύς: womb ), who is obviously connected with Delphi and Apollo Delphinios, and a male serpent Typhon ( τύφειν: smoke ), the adversary of Zeus in the Titanomachy, who the narrators confused with Python.

It is widely used in commercial ionization chamber smoke detectors, as well as in neutron sources and industrial gauges.

Americium-241, an alpha emitter, is used in smoke detectors.

The wood of certain alder species is often used to smoke various food items, especially salmon and other seafood.

A popular, but probably apocryphal, story is that once when an opponent laid a cigar on the table, he complained to the tournament arbiters, " He is threatening to smoke, and as an old player you must know that the threat is stronger than the execution.

A vortex is created by the passage of an aircraft wing, revealed by smoke.

A wet scrubber is basically a reaction tower equipped with a fan that extracts hot smoke stack gases from a power plant into the tower.

The final episode of this series, " Goodbyeee ", is known for being extraordinarily poignant for a comedy – especially the final scene, which sees the main characters ( Blackadder, Baldrick, George, and Darling ) finally going " over the top " and charging off into the fog and smoke of no man's land to presumably die.

Acetone is required for the production of cordite, a powerful propellant explosive needed to fire ammunition without generating tell-tale smoke.

Camouflage is a form of visual deception ; the term probably comes from camouflet, a French term meaning smoke blown in someone's face as a practical joke.

In particular, smoke signals are one of the oldest examples of a digital signal, where an analog " carrier " ( smoke ) is modulated with a blanket to generate a digital signal ( puffs ) that conveys information.

In contrast, self-immolation caused by smoking after being administered a flammable ointment in a hospital and specifically told not to smoke is grounds for nomination.

This effect is achieved by exposing the food to smoke from burning plant materials such as wood.

He has questioned the link between second-hand smoke and lung cancer, and has been an outspoken opponent of the mainstream scientific view on climate change ; he argues there is no evidence that increases in carbon dioxide produced by human beings is causing global warming and that the temperature of the earth has always varied.

" In December 2010 he wrote in American Thinker that he is nonsmoker who finds second-hand smoke an unpleasant irritant that cannot be healthy ; he also wrote that his father, a heavy smoker, died of emphysema when relatively young.

It is said that the Klephts, bandits of the countryside who did not have flocks of their own, would steal lambs or goats and cook the meat in a sealed pit to avoid the smoke being seen.

The first reference to the incendiary properties of such mixtures is the passage of the Zhenyuan miaodao yaolüe, a Taoist text tentatively dated to the mid-9th century AD: " Some have heated together sulfur, realgar and saltpeter with honey ; smoke and flames result, so that their hands and faces have been burnt, and even the whole house where they were working burned down.

In any case, the formula claimed to have been decrypted ( 7: 5: 5 saltpeter: charcoal: sulfur ) is not useful for firearms use or even firecrackers, burning slowly and producing mostly smoke.

In Istria ham is protected by origin ( only Croatian ham that is protected ( PDO )), made only with natural herb ( garlic, sea salt, bay leaf, black papper ) and dried without smoke.

( He also used to smoke before the controversy.

The film used was not very sensitive and under the strong lights needed, something would start to smoke if left there too long.

The smoke from burning giraffe skins was used by the medicine men of Buganda to treat nose bleeds.

The brazier, burning a match of linen or flax that produced intense heat and the characteristic thick smoke, was used to heat oil and the other ingredients in an airtight tank above it, a process that also helped to dissolve the resins into a fluid mixture.

Through the 19th and in the early half of the 20th century, Londoners used coal for heating their homes, which produced large amounts of smoke.

For example, the tobacco industry has used the term " junk science " to describe research demonstrating the harmful effects of smoking and second-hand smoke, through the vehicle of various " astroturf groups ".

At one time, citrus growers used a smudge pot fueled by kerosene to create a pall of thick smoke over a grove in an effort to prevent freezing temperatures from damaging crops.

It is also used in slang to mean being immersed in a room filled with cigarette or other tobacco smoke.

Battery-powered locomotives are used in mines and other underground locations where diesel fumes or smoke would endanger crews, and where external electricity supplies cannot be used due to the danger of sparks igniting flammable gas.

Johann Georg Schröpfer of Leipzig used the magic lantern to conjure up images of spirits on smoke.

Smoke, coming from an oasting fireplace ( via smoke channels ) is then used to heat the wooden floor and the sprouted grains.

" The model was used to investigate the effects of a war involving the entire current global nuclear arsenal, projected to release about 150 Tg of smoke into the atmosphere, as well as a war involving about one third of the current nuclear arsenal, projected to release about 50 Tg of smoke.

The same reference claims that the smoke released has no negative impact on neighbors or the environment, and the ash left in the stove can be used for fertilizing gardens and plants.

( Traditionally, wet straw was used to produce the black smoke, but this was not completely reliable.

When enemies attempted to dig tunnels under walls for mining or entry into the city, the defenders used large bellows ( the type the Chinese commonly used in heating up a blast furnace for smelting cast iron ) to pump smoke into the tunnels in order to suffocate the intruders.

As tobacco was not introduced to the Old World until the 16th century, the pipes outside of the Americas were usually used to smoke hashish, a rare and expensive substance outside areas of the Middle East, Central Asia and India, where it was produced.

In general smoke signals are used to transmit news, signal danger, or gather people to a common area.

Yámanas used fire to send messages by smoke signals, for instance if a whale drifted ashore.