Smoke ring

Smoke ring

A smoke ring is a visible vortex ring formed by expelling smoke through an opening. It can be created by blowing smoke from the mouth, while smoking. In general, a smoke ring occurs when a mass of fluid (from the mouth, lungs, or another reservoir) is impulsively pushed through a roughly circular opening, forming a vortex ring just outside of the opening. The smoke ring travels roughly straight from the opening and maintains its shape until dispersed by turbulence or other interference. The smoke serves to make the flow pattern of the air visible, and does not significantly affect the fluid behavior.Another method of creating a smoke ring involves releasing a mass of fluid with a different density than the surrounding fluid. This can be done in several ways:

Releasing air underwater forms rings of bubbles. Scuba divers often do this, and dolphins have also been observed performing this trick.cite web|author=Don White|title=Mystery of the Silver Rings|accessdate=2007-10-25|url=]

A vortex ring or smoke ring can be formed in the atmosphere by a rising (falling) mass of warm (cold) air, which is also called a thermal (microburst). One is occasionally at the core of a mushroom cloud, and they can be seen at fire eater presentations.


There are five main ways of making a smoke ring with the mouth.Fact|date=October 2008 Although all require the formation of an 'O' with the mouth, they differ in the way the smoke is physically expelled. The first technique is to let smoke into the mouth, then gently flick the tongue to expel a short burst of smoke. The second is to let smoke into the mouth, then while pushing the jaw out, slowly open and close the jaw to push smoke out. The third is to form the 'O' with the lips, then gently say just the very beginning of 'Oh'. The fourth technique is to let smoke into the mouth, and then tap your cheek. The fifth technique differs from the previous three in that one does not need to fill up the mouth with smoke beforehand because the smoke is actually being expelled from the lungs, not the mouth. Most smokers blow rings using some combination of these five techniques. A trick often performed in conjunction with mouth-blown smoke rings is the French inhale.A lit cigarette or stick of incense can also be used to create a smoke ring. To do this, hold it vertically and quickly raise it about 4 inches, then gently pull it back down. This creates the vortex needed to create a smoke ring.


A smoke ring is also the name for the pink ring that forms around the edges of meat prepared by Texas barbecue, caused by myoglobin in the meat reacting with carbon monoxide to form a heat stable pigment.Fact|date=July 2007

ee also

*Vortex ring toys

External links

* [ How to puff a smoke ring?]
* [ Blowing a smoke ring] (wikiHow)
* [ Video of a smoke Ring being made]
* [ Video of smoke rings being made]
* [ Smoke rings generated by eruptions of Etna volcano]
* [ Smoke rings from Stromboli volcano]
* [ Instructions on building a smoke ring cannon]
* [ Smoke rings at US Army disposals in Iraq] (see images on bottom)


Wikimedia Foundation. 2010.

Игры ⚽ Нужна курсовая?

Look at other dictionaries:

  • smoke ring — smoke ring, smoke forced out between the lips of a smoker in the shape of a ring. * * * n. a ring shaped puff of smoke exhaled by a smoker …   Useful english dictionary

  • smoke ring — noun A smoking trick where one blows or exhales rings of smoke. A smoke ring persists for a surprisingly long time, illustrating the slow rate at which viscosity dissipates the energy of a vortex …   Wiktionary

  • The Smoke Ring (novel) — infobox Book | name = The Smoke Ring title orig = translator = image caption = Del Rey paperback edition author = Larry Niven illustrator = cover artist = country = United States language = English series = The State genre = Science fiction novel …   Wikipedia

  • The Smoke Ring (band) — The Smoke Ring was a rock band from Norfolk, Nebraska active in the 1960s. It was formed from two previous regionally popular rock and roll groups, Little Joe the Ramrods and The Strollers. They had strong regional success but charted only one… …   Wikipedia

  • The Smoke Ring — may refer to:*Smoke rings formed by smoke * The Smoke Ring (novel) , a novel by Larry Niven *The Smoke Ring (band), a 1960s rock group …   Wikipedia

  • smoke — n. & v. n. 1 a visible suspension of carbon etc. in air, emitted from a burning substance. 2 an act or period of smoking tobacco (had a quiet smoke). 3 colloq. a cigarette or cigar (got a smoke?). 4 (the Smoke) Brit. & Austral. colloq. a big city …   Useful english dictionary

  • ring — ring1 ringless, adj. ringlike, adj. /ring/, n., v., ringed, ringing. n. 1. a typically circular band of metal or other durable material, esp. one of gold or other precious metal, often set with gems, for wearing on the finger as an ornament, a… …   Universalium

  • ring — I [[t]rɪŋ[/t]] n. 1) jew a typically circular band of durable material, as gold, worn on the finger as an ornament, a token of betrothal or marriage, etc 2) anything having the form of such a band: a smoke ring[/ex] 3) a circular line or mark:… …   From formal English to slang

  • ring — I. noun Etymology: Middle English, from Old English hring; akin to Old High German hring ring, Old Church Slavic krǫgŭ circle Date: before 12th century 1. a circular band for holding, connecting, hanging, pulling, packing, or sealing < a key ring …   New Collegiate Dictionary

  • ring — I n. circular band 1) a diamond; gold; sapphire ring 2) an earring; engagement; signet; wedding ring 3) a key; napkin; teething ring 4) a piston ring 5) smoke rings (to blow smoke rings) 6) (misc.) to wear a ring on one s finger group 7) a… …   Combinatory dictionary

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”