A spinning top, or simply a top, is a

toy A toy or plaything is an object that is used primarily to provide entertainment. Simple examples include toy blocks, board games, and dolls. Toys are often designed for use by children, although many are designed specifically for adults and pet ...

with a squat body and a sharp point at the bottom, designed to be

spun ''Spun'' is a 2002 American black comedy crime drama film directed by Jonas Åkerlund from an original screenplay by William De Los Santos and Creighton Vero, based on three days of De Los Santos's life in the Eugene, Oregon, drug subculture. The ...

on its vertical

axis An axis (plural ''axes'') is an imaginary line around which an object rotates or is symmetrical. Axis may also refer to: Mathematics * Axis of rotation: see rotation around a fixed axis * Axis (mathematics), a designator for a Cartesian-coordinat ...

, balancing on the tip due to the

gyroscopic effect A gyroscope (from Ancient Greek γῦρος ''gŷros'', "round" and σκοπέω ''skopéō'', "to look") is a device used for measuring or maintaining orientation and angular velocity. It is a spinning wheel or disc in which the axis of rota ...

. Once set in motion, a top will usually

wobble Wobble or wobbles may refer to: * "Wobble" (song), a single by V.I.C. * Wobbles (equine disorder), a disorder of the nervous system in dogs and horses * Wobble base pair, a type of base pairing in genetics * Jah Wobble (born 1958), British mus ...

for a few seconds, spin upright for a while, then start to wobble again with increasing amplitude as it loses energy, and finally tip over and roll on its side. Tops exist in many variations and materials, chiefly

wood Wood is a porous and fibrous structural tissue found in the stems and roots of trees and other woody plants. It is an organic materiala natural composite of cellulose fibers that are strong in tension and embedded in a matrix of lignin ...

metal A metal (from Greek μέταλλον ''métallon'', "mine, quarry, metal") is a material that, when freshly prepared, polished, or fractured, shows a lustrous appearance, and conducts electricity and heat relatively well. Metals are typicall ...

, and

plastic Plastics are a wide range of synthetic or semi-synthetic materials that use polymers as a main ingredient. Their plasticity makes it possible for plastics to be moulded, extruded or pressed into solid objects of various shapes. This adaptab ...

, often with a metal tip. They may be set in motion by twirling a handle with the fingers, by pulling a

rope A rope is a group of yarns, plies, fibres, or strands that are twisted or braided together into a larger and stronger form. Ropes have tensile strength and so can be used for dragging and lifting. Rope is thicker and stronger than similar ...

coiled around the body, or by means of a built-in auger (spiral plunger). Such toys have been used since antiquity in solitary or competitive games, where each player tries to keep one's top spinning for as long as possible, or achieve some other goal. Some tops have faceted bodies with symbols or inscriptions, and are used like dice to inject

randomness In common usage, randomness is the apparent or actual lack of pattern or predictability in events. A random sequence of events, symbols or steps often has no order and does not follow an intelligible pattern or combination. Individual rand ...

into games, or for divination and

ritual A ritual is a sequence of activities involving gestures, words, actions, or objects, performed according to a set sequence. Rituals may be prescribed by the traditions of a community, including a religious community. Rituals are characterized ...

purposes. The ubiquity of spinning tops lends to the fact that the toy is used to name many living things such as ''

Cyclosa turbinata ''Cyclosa turbinata'' is a species of orb weaver belonging to the family of spiders known as Araneidae. It is found in a range from the United States to Panama, West Indies, Galapagos Islands, and has been introduced into Hawaii. Geographic Loc ...

'', whose name comes from the Latin roots for spinning top.

History

Origins

The top is one of the oldest recognizable toys found on archaeological sites. Spinning tops originated independently in cultures all over the world. Tops were used as toys in ancient Rome. Besides toys, tops have also historically been used for

gambling Gambling (also known as betting or gaming) is the wagering of something of value ("the stakes") on a random event with the intent of winning something else of value, where instances of strategy are discounted. Gambling thus requires three el ...

and

prophecy In religion, a prophecy is a message that has been communicated to a person (typically called a '' prophet'') by a supernatural entity. Prophecies are a feature of many cultures and belief systems and usually contain divine will or law, or pr ...

. Some role-playing games use tops to augment dice in generating randomized results; it is in this case referred to as a spinner. Gould mentions

maple ''Acer'' () is a genus of trees and shrubs commonly known as maples. The genus is placed in the family Sapindaceae.Stevens, P. F. (2001 onwards). Angiosperm Phylogeny Website. Version 9, June 2008 nd more or less continuously updated since http ...

seeds,

celts The Celts (, see pronunciation for different usages) or Celtic peoples () are. "CELTS location: Greater Europe time period: Second millennium B.C.E. to present ancestry: Celtic a collection of Indo-European peoples. "The Celts, an ancien ...

(leading to rattlebacks), the fire-drill, the spindle whorl, and the

potter's wheel In pottery, a potter's wheel is a machine used in the shaping (known as throwing) of clay into round ceramic ware. The wheel may also be used during the process of trimming excess clay from leather-hard dried ware that is stiff but malleable, a ...

as possible predecessors to the top, which he assumes was invented or discovered multiple times in multiple places.

Color demonstrations with tops

A top may be used to demonstrate visual properties, such as by James David Forbes and

James Clerk Maxwell James Clerk Maxwell (13 June 1831 – 5 November 1879) was a Scottish mathematician and scientist responsible for the classical theory of electromagnetic radiation, which was the first theory to describe electricity, magnetism and li ...

in Maxwell's disc (see

color triangle A color triangle is an arrangement of colors within a triangle A triangle is a polygon with three edges and three vertices. It is one of the basic shapes in geometry. A triangle with vertices ''A'', ''B'', and ''C'' is denoted \trian ...

). By rapidly spinning the top, Forbes created the illusion of a single color that was a mixture of the primaries: Maxwell took this a step further by using a circular scale around the rim with which to measure the ratios of the primaries, choosing

vermilion Vermilion (sometimes vermillion) is a color, color family, and pigment most often made, since antiquity until the 19th century, from the powdered mineral cinnabar (a form of mercury sulfide, which is toxic) and its corresponding color. It i ...

, emerald, and

ultramarine Ultramarine is a deep blue color pigment which was originally made by grinding lapis lazuli into a powder. The name comes from the Latin ''ultramarinus'', literally 'beyond the sea', because the pigment was imported into Europe from mines in Afg ...

Spinning methods

Finger twirling

Smaller tops have a short stem, and are set in motion by twirling it using the fingers. A

thumbtack A drawing pin (in British English) or thumb tack (in North American English) is a short nail or pin used to fasten items to a wall or board for display and intended to be inserted by hand, usually using the thumb. A variety of names is used ...

may also be made to spin on its tip in the same way.

Strings and whips

A typical fist-sized model, traditionally made of wood with a blunt iron tip, is meant to be set in motion by briskly pulling a string or

tightly coiled around the body. The rope is best wound starting near the tip and progressing up along the widening body, so that the tension of the string will remain roughly constant while the top's angular speed increases. These tops may be thrown forward while firmly grasping the end of the string and pulling it back. The forward momentum of the top contributes to the string's tension and thus to the final spin rate. In some throwing styles, the top is thrown upside-down, but the first loop of the rope is wound around a stubby "head". Then, the sudden yank on the head as the string finishes unwinding causes the spinning top to flip over and land on its tip. Alternatively, tops of this class may be started by hand but then accelerated and kept in motion by striking them repeatedly with a small whip.

Augers

Some larger models are set in motion by means of a built-in metal auger (spiral plunger). In these models, the actual top may be enclosed in a hollow metal shell, with the same axis but decoupled from it; so that the toy may appear to be stationary but "magically" balanced on its tip.

Magnetic fields

Some modern tops are kept perpetually in motion by spinning magnetic fields from a special ground plate.

Notable types

Gould classifies tops into six main types: twirler, supported top, peg-top, whip-top,

buzzer A buzzer or beeper is an audio signaling device, which may be mechanical, electromechanical, or piezoelectric (''piezo'' for short). Typical uses of buzzers and beepers include alarm devices, timers, train and confirmation of user input such as a ...

, and

yo-yo A yo-yo (also spelled yoyo) is a toy consisting of an axle connected to two disks, and a string looped around the axle, similar to a spool. It is an ancient toy with proof of existence since 500 BCE. The yo-yo was also called a bandalore in ...

. * Competing tops ** Battling Tops **

Beigoma The ''beigoma'' (Japanese language, Japanese: ベーゴマ) is a traditional Japanese culture, Japanese top that is approximately 3 cm in diameter and often decorated with kanji. When spun correctly, the ''beigoma'' makes a humming sound. ...

, in Japan **

Beyblade is a line of spinning-top toys originally developed by Takara, first released in Japan in July 1999, along with its debut series. Following Takara's merger with Tomy in 2006, Beyblades are now developed by Takara Tomy. Various toy companies ...

** Gasing pangkah, in

Malaysia Malaysia ( ; ) is a country in Southeast Asia. The federation, federal constitutional monarchy consists of States and federal territories of Malaysia, thirteen states and three federal territories, separated by the South China Sea into two r ...

Spin Fighters Spin Fighters were die-cast metal top toys that were manufactured by Bandai in China from 1993 to 1997. The tops were loaded into launchers (later, called "power launchers"), which were then tightly wound by fingertip, and subsequently released in ...

Tuj lub The Hmong people are an ethnic group currently native to several countries, believed to have come from the Yangtze river basin area in southern China. The Hmong are known in China as the ''Miao'', which encompasses not only Hmong, but also other ...

, among Hmong people * Gaming and other tops ** Dreidel, traditionally played during the

Jewish holiday Jewish holidays, also known as Jewish festivals or ''Yamim Tovim'' ( he, ימים טובים, , Good Days, or singular , in transliterated Hebrew []), are holidays observed in Judaism and by JewsThis article focuses on practices of mainstre ...

of Hanukkah. ** Pambaram **Levitron, Levitating top **Bhawra, a gaming top used in Maharashtra in India ** Perinola, a six-sided top, very similar to the dreidel, that is used for a similar game in Latin America. ** Rattleback, or celt, a top that reverses its spin direction **

Teetotum A teetotum (or T-totum) is a form of spinning top most commonly used for gambling games. It has a polygonal body marked with letters or numbers, which indicate the result of each spin. Usage goes back to (at least) ancient Greeks and Romans, w ...

** Tippe top ** Trompo, or "Whipping top" ** Wizzzer

Modern tops have several sophisticated improvements, such as ball bearings of

ruby A ruby is a pinkish red to blood-red colored gemstone, a variety of the mineral corundum ( aluminium oxide). Ruby is one of the most popular traditional jewelry gems and is very durable. Other varieties of gem-quality corundum are called ...

or a hard

ceramic A ceramic is any of the various hard, brittle, heat-resistant and corrosion-resistant materials made by shaping and then firing an inorganic, nonmetallic material, such as clay, at a high temperature. Common examples are earthenware, porcelain ...

tungsten carbide Tungsten carbide (chemical formula: WC) is a chemical compound (specifically, a carbide) containing equal parts of tungsten and carbon atoms. In its most basic form, tungsten carbide is a fine gray powder, but it can be pressed and formed into ...

, that reduces the friction with the ground surface. Functional art tops have become collectibles built using varied techniques in metal-working, glass-working, and wood-working.

Physics

The motion of a top is described by equations of

rigid body dynamics In the physical science of dynamics, rigid-body dynamics studies the movement of systems of interconnected bodies under the action of external forces. The assumption that the bodies are ''rigid'' (i.e. they do not deform under the action of ...

, specifically the theory of rotating rigid bodies. Because of the small contact area between the tip and the underlying surface, and the large

rotational inertia The moment of inertia, otherwise known as the mass moment of inertia, angular mass, second moment of mass, or most accurately, rotational inertia, of a rigid body is a quantity that determines the torque needed for a desired angular acceler ...

of its body, a top that is started on a hard surface will usually keep spinning for tens of seconds or more, even without additional energy input. Typically the top will at first wobble until

friction Friction is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other. There are several types of friction: *Dry friction is a force that opposes the relative lateral motion of ...

and

torque In physics and mechanics, torque is the rotational equivalent of linear force. It is also referred to as the moment of force (also abbreviated to moment). It represents the capability of a force to produce change in the rotational motion of th ...

between the tip and the underlying surface force it to spin with the axis steady and upright. Contrary to what is sometimes assumed, longstanding scientific studies (and easy experimentations reproducible by anyone) show that reducing the friction increases the time needed to reach this stable state (unless the top is so unbalanced that it falls over before reaching it). After spinning upright (in the so-called "sleep" position) for an extended period, the

angular momentum In physics, angular momentum (rarely, moment of momentum or rotational momentum) is the rotational analog of linear momentum. It is an important physical quantity because it is a conserved quantity—the total angular momentum of a closed syst ...

will gradually lessen (mainly due to friction), leading to ever increasing

precession Precession is a change in the orientation of the rotational axis of a rotating body. In an appropriate reference frame it can be defined as a change in the first Euler angle, whereas the third Euler angle defines the rotation itself. In oth ...

, finally causing the top to topple and roll some distance on its side. In the "sleep" period, and only in it, provided it is ever reached, less friction means longer "sleep" time (whence the common error that less friction implies longer global spinning time). The total spinning time of a top is generally increased by increasing its moment of inertia and lowering its

center of gravity In physics, the center of mass of a distribution of mass in space (sometimes referred to as the balance point) is the unique point where the weighted relative position of the distributed mass sums to zero. This is the point to which a force ma ...

. These variables however are constrained by the need to prevent the body from touching the ground. Asymmetric tops of virtually any shape can also be created and designed to balance.

Competitions

There are many official competitions for top spinning as a sport, such as the U. S. National Championships and the World Championships. During the

Covid-19 pandemic The COVID-19 pandemic, also known as the coronavirus pandemic, is an ongoing global pandemic of coronavirus disease 2019 (COVID-19) caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). The novel virus was first identi ...

contests are often held on-line, with contestants submitting videos.

In popular culture

The

Jean Shepherd Jean Parker 'Shep' Shepherd Jr. (~July 21, 1921 – October 16, 1999) was an American storyteller, humorist, radio and TV personality, writer, and actor. With a career that spanned decades, Shepherd is known for the film ''A Christmas Story'' ...

story "Scut Farkas and the Murderous Mariah" revolves around top-spinning in the fictional Depression-era American city of Hohman, Indiana. The bully and the named top in the title are challenged by Shepherd's ongoing protagonist Ralph and a so-called "gypsy top" of similar design to Mariah named Wolf. The Top is a

short story A short story is a piece of prose fiction that typically can be read in one sitting and focuses on a self-contained incident or series of linked incidents, with the intent of evoking a single effect or mood. The short story is one of the oldest ...

bohemian Bohemian or Bohemians may refer to: *Anything of or relating to Bohemia Beer * National Bohemian, a brand brewed by Pabst * Bohemian, a brand of beer brewed by Molson Coors Culture and arts * Bohemianism, an unconventional lifestyle, origin ...

writer

Franz Kafka Franz Kafka (3 July 1883 – 3 June 1924) was a German-speaking Bohemian novelist and short-story writer, widely regarded as one of the major figures of 20th-century literature. His work fuses elements of realism and the fantastic. It ...

. The top is a focal element and metaphysical symbol in the movie ''

Inception ''Inception'' is a 2010 science fiction action film written and directed by Christopher Nolan, who also produced the film with Emma Thomas, his wife. The film stars Leonardo DiCaprio as a professional thief who steals information by infi ...

'', directed by

Christopher Nolan Christopher Edward Nolan (born 30 July 1970) is a British-American filmmaker. Known for his lucrative Hollywood blockbusters with complex storytelling, Nolan is considered a leading filmmaker of the 21st century. His films have grossed $5&nb ...

and starring Leonardo DiCaprio. In the final shot, the camera moves over the spinning top just before it appears to be wobbling. In 2022, an Armenian-styled spinning top, with the slong "Spin the Magic", was chosen as the theme art and the main motif for the 20th edition of

Junior Eurovision Song Contest The Junior Eurovision Song Contest (often shortened to JESC, Junior Eurovision or Junior EuroSong) is an international song competition which has been organised by the European Broadcasting Union (EBU) annually since 2003. It is held in a diff ...

, which will be held in

Yerevan Yerevan ( , , hy, Երևան , sometimes spelled Erevan) is the capital and largest city of Armenia and one of the world's oldest continuously inhabited cities. Situated along the Hrazdan River, Yerevan is the administrative, cultural, and i ...

Armenia Armenia (), , group=pron officially the Republic of Armenia,, is a landlocked country in the Armenian Highlands of Western Asia.The UNbr>classification of world regions places Armenia in Western Asia; the CIA World Factbook , , and ' ...