Figure 8 (figure of 8 in British English) may refer to: *

8 (number) 8 (eight) is the natural number following 7 and preceding 9. In mathematics 8 is: * a composite number, its proper divisors being , , and . It is twice 4 or four times 2. * a power of two, being 2 (two cubed), and is the first number of t ...

, in Arabic numerals

Entertainment

* ''Figure 8'' (album), a 2000 album by Elliott Smith * "Figure of Eight" (song), a 1989 song by Paul McCartney * ''

Figure Eight EP This Et Al were an English alternative rock band, from Leeds and Bradford, West Yorkshire, England."Figure 8" (song), a 2012 song by Ellie Goulding from ''Halcyon'' * "Figure Eight", an episode and song from the children's educational series ''

Schoolhouse Rock! ''Schoolhouse Rock!'' is an American interstitial programming series of animated musical educational short films (and later, videos) that aired during the Saturday morning children's programming block on the U.S. television network ABC. The t ...

'' * "Figure of Eight", song by Status Quo from ''

In Search of the Fourth Chord ''In Search of the Fourth Chord'' is the twenty-eighth studio album by English rock band Status Quo, released on 17 September 2007. The title is a tongue-in-cheek reference to the rumour that the group always plays the same three chords, and a ...

'' * "Figure 8", a song by FKA Twigs from the EP '' M3LL155X''

Geography

* Figure Eight Island, North Carolina, United States * Figure Eight Lake, Alberta, Canada * Figure-Eight Loops, feature of the Historic Columbia River Highway in Guy W. Talbot State Park

Mathematics and sciences

Figure-eight knot (mathematics) Figure 8 (figure of 8 in British English) may refer to: * 8 (number), in Arabic numerals Entertainment * ''Figure 8'' (album), a 2000 album by Elliott Smith * "Figure of Eight" (song), a 1989 song by Paul McCartney * '' Figure Eight EP'', ...

, in knot theory * ∞, symbol meaning infinity *

Lemniscate In algebraic geometry, a lemniscate is any of several figure-eight or -shaped curves. The word comes from the Latin "''lēmniscātus''" meaning "decorated with ribbons", from the Greek λημνίσκος meaning "ribbons",. or which alternative ...

, various types of mathematical curve that resembles a figure 8 * Figure 8, a two-lobed

Lissajous curve A Lissajous curve , also known as Lissajous figure or Bowditch curve , is the graph of a system of parametric equations : x=A\sin(at+\delta),\quad y=B\sin(bt), which describe the superposition of two perpendicular oscillations in x and y dire ...

* Figure 8, in topology, the

rose A rose is either a woody perennial flowering plant of the genus ''Rosa'' (), in the family Rosaceae (), or the flower it bears. There are over three hundred species and tens of thousands of cultivars. They form a group of plants that can be ...

with two petals * Figure 8, shape described by an

analemma In astronomy, an analemma (; ) is a diagram showing the position of the Sun in the sky as seen from a fixed location on Earth at the same mean solar time, as that position varies over the course of a year. The diagram will resemble a figur ...

, a curve in astronomy

Ropes

* Figure eight bend or

Flemish bend The Flemish bend, also known as a figure eight bend, a rewoven figure eight is a knot for joining two ropes of roughly similar size. A loose figure-eight knot is tied in the end of one rope. The second rope is now threaded backwards parallel t ...

, a knot *

Figure-eight knot The figure-eight knot or figure-of-eight knot is a type of stopper knot. It is very important in both sailing and rock climbing as a method of stopping ropes from running out of retaining devices. Like the overhand knot, which will jam under st ...

, typically used as a stopper knot * Figure-eight loop, figure of eight knot tied "on the bight"

Sport and leisure

Figure 8 racing Figure 8 racing is a form of stock car racing in which automobiles race on a track that purposely intersects itself, increasing the risk of collisions. Figure 8 racing is most common and popular in the United States and Canada. Because of the r ...

, a category of auto racing related to the demolition derby *

Figure 8 roller coaster Figure 8 roller coasters are a category of roller coasters where the train runs through a figure 8 shaped course before returning to the boarding station. This design was one of the first designs to be featured in roller coaster design, along with ...

, a track design * Figure 8, shape from which

compulsory figures Compulsory figures or school figures were formerly a segment of figure skating, and gave the sport its name. They are the "circular patterns which skaters trace on the ice to demonstrate skill in placing clean turns evenly on round circles". For ...

in ice skating are derived * Figure 8, a riding figure used in the training of horses * Figure-eight, type of

noseband A noseband is the part of a horse's bridle that encircles the nose and jaw of the horse. In English riding, where the noseband is separately attached to its own headstall or crownpiece, held independently of the bit, it is often called a cavesson ...

* Figure eight turn,

man overboard rescue turn A man overboard rescue turn (or person overboard) is a shiphandling manoeuvre usually implemented immediately upon learning of a person having gone overboad into the sea. To bring a vessel closer to the person's location, implementations of the pri ...

in sailing *

Figure 8 (belay device) The figure 8 belay device is a piece of metal (usually an aluminum alloy) in the shape of an 8 with one large end and one small end. Usage This device utilizes a large surface area in contact with a climbing rope to provide sufficient friction ...

, a piece of rock climbing equipment * Figure of 8, figure in English country dance *

Figure eight (angling) The figure eight is a technique used by anglers to fish specifically for the muskellunge. It has been developed due to the nature of the fish's hunting style. Essentially, the figure eight is a final enticement performed by the angler just bef ...

, a technique used by anglers to fish specifically for the muskellunge

Other uses

Figure 8 Puffer ''Dichotomyctere ocellatus'' (syn. ''Tetraodon biocellatus''), commonly the figure 8 puffer or eyespot puffer, is a pufferfish found in freshwater in Southeast Asia. It is known from the lower reaches of the Mekong (Cambodia), the Peninsula ...

(''Tetraodon biocellatus''), breed of pufferfish * Figure 8 or bi-directional, response pattern of some

microphone A microphone, colloquially called a mic or mike (), is a transducer that converts sound into an electrical signal. Microphones are used in many applications such as telephones, hearing aids, public address systems for concert halls and publ ...