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 p ...

with a squat body and a sharp point at the bottom, designed to be spun on its vertical

axis An axis (: axes) may refer to: Mathematics *A specific line (often a directed line) that plays an important role in some contexts. In particular: ** Coordinate axis of a coordinate system *** ''x''-axis, ''y''-axis, ''z''-axis, common names ...

, 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 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 structural tissue/material found as xylem in the stems and roots of trees and other woody plants. It is an organic materiala natural composite of cellulosic fibers that are strong in tension and embedded in a matrix of lignin t ...

metal A metal () is a material that, when polished or fractured, shows a lustrous appearance, and conducts electrical resistivity and conductivity, electricity and thermal conductivity, heat relatively well. These properties are all associated wit ...

, and

plastic Plastics are a wide range of synthetic polymers, synthetic or Semisynthesis, semisynthetic materials composed primarily of Polymer, polymers. Their defining characteristic, Plasticity (physics), plasticity, allows them to be Injection moulding ...

, 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, Plying, plies, fibres, or strands that are plying, twisted or braided together into a larger and stronger form. Ropes have high tensile strength and can be used for dragging and lifting. Rope is thicker and stronger ...

coiled around the body, or through a built-in auger (spiral plunger). Such toys have been used since antiquity in solitary or competitive

game A game is a structured type of play usually undertaken for entertainment or fun, and sometimes used as an educational tool. Many games are also considered to be work (such as professional players of spectator sports or video games) or art ...

s, 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 A die (: dice, sometimes also used as ) is a small, throwable object with marked sides that can rest in multiple positions. Dice are used for generating random values, commonly as part of tabletop games, including dice games, board games, ro ...

to inject

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

into games or for

divination Divination () is the attempt to gain insight into a question or situation by way of an occultic ritual or practice. Using various methods throughout history, diviners ascertain their interpretations of how a should proceed by reading signs, ...

and

ritual A ritual is a repeated, structured sequence of actions or behaviors that alters the internal or external state of an individual, group, or environment, regardless of conscious understanding, emotional context, or symbolic meaning. Traditionally ...

purposes. The ubiquity of spinning tops lends to the fact that the toy is used to name many living things such as '' Cyclosa turbinata'', whose name comes from the Latin roots for spinning top.

History

Origins

Spinning tops emerged independently in various cultures worldwide and are considered among the oldest known toys discovered by archaeologists. They have been unearthed on every continent except Antarctica. For instance, tops dating back to around 1250 BCE were found in China, while a carved wooden top from approximately 2000 BCE was discovered in Tutankhamun's tomb. 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 (economics), value ("the stakes") on a Event (probability theory), random event with the intent of winning something else of value, where instances of strategy (ga ...

and

prophecy In religion, mythology, and fiction, 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 di ...

. Some

role-playing game A role-playing game (sometimes spelled roleplaying game, or abbreviated as RPG) is a game in which players assume the roles of player character, characters in a fictional Setting (narrative), setting. Players take responsibility for acting out ...

s use tops to augment

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 soapberry family Sapindaceae.Stevens, P. F. (2001 onwards). Angiosperm Phylogeny Website. Version 9, June 2008 nd more or less continuously updated si ...

seeds,

celts The Celts ( , see Names of the Celts#Pronunciation, pronunciation for different usages) or Celtic peoples ( ) were a collection of Indo-European languages, Indo-European peoples. "The Celts, an ancient Indo-European people, reached the apoge ...

(leading to

rattleback A rattleback is a semi-ellipsoidal top which will rotate on its axis in a preferred direction. If spun in the opposite direction, it becomes unstable, "rattles" to a stop and reverses its spin to the preferred direction. For most rattlebacks the ...

s), the fire-drill, the

spindle whorl A spindle whorl is a weighted object fitted to a spindle to help maintain the spindle's speed of rotation while spinning yarn. History A spindle whorl may be a disk or spherical object. It is typically positioned on the bottom of the spindle. T ...

, 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, ...

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 physicist and mathematician who was responsible for the classical theory of electromagnetic radiation, which was the first theory to describe electricity, magnetism an ...

in Maxwell's disc (see color triangle). 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 family and pigment most often used between antiquity and the 19th century from the powdered mineral cinnabar (a form of mercury sulfide). It is synonymous with red orange, which often takes a moder ...

emerald Emerald is a gemstone and a variety of the mineral beryl (Be3Al2(SiO3)6) colored green by trace amounts of chromium or sometimes vanadium.Hurlbut, Cornelius S. Jr., and Kammerling, Robert C. (1991). ''Gemology'', John Wiley & Sons, New York ...

, and

ultramarine Ultramarine is a deep blue pigment which was originally made by grinding lapis lazuli into a powder. Its lengthy grinding and washing process makes the natural pigment quite valuable—roughly ten times more expensive than the stone it comes fr ...

Spinning methods

Finger twirling

Smaller tops have a short stem, and are set in motion by twirling it using the fingers. A thumbtack 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 String or strings may refer to: *String (structure), a long flexible structure made from threads twisted together, which is used to tie, bind, or hang other objects Arts, entertainment, and media Films * ''Strings'' (1991 film), a Canadian anim ...

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 In Newtonian mechanics, momentum (: momenta or momentums; more specifically linear momentum or translational momentum) is the product of the mass and velocity of an object. It is a vector quantity, possessing a magnitude and a direction. ...

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 A whip is a blunt weapon or implement used in a striking motion to create sound or pain. Whips can be used for flagellation against humans or animals to exert control through pain compliance or fear of pain, or be used as an audible cue thro ...

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 field A magnetic field (sometimes called B-field) is a physical field that describes the magnetic influence on moving electric charges, electric currents, and magnetic materials. A moving charge in a magnetic field experiences a force perpendicular ...

s 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 ...

, and yo-yo. * Competing tops ** Battling Tops ** Beigoma, in

Japan Japan is an island country in East Asia. Located in the Pacific Ocean off the northeast coast of the Asia, Asian mainland, it is bordered on the west by the Sea of Japan and extends from the Sea of Okhotsk in the north to the East China Sea ...

Beyblade Beyblade (Japanese: ベイブレード ''Beiburēdo'') is a battling spinning top toyline and multimedia franchise developed by Takara Tomy. Beyblades were inspired by the old "beigoma" spinning tops in olden Asia. The first modern Beyblade was ...

** Gasing pangkah, in

Malaysia Malaysia is a country in Southeast Asia. Featuring the Tanjung Piai, southernmost point of continental Eurasia, it is a federation, federal constitutional monarchy consisting of States and federal territories of Malaysia, 13 states and thre ...

** Spin Fighters ** Tuj lub, among

Hmong people The Hmong people ( RPA: , CHV: ''Hmôngz'', Nyiakeng Puachue: , Pahawh Hmong: , , zh, c=苗族蒙人) are an indigenous group in East Asia and Southeast Asia. In China, the Hmong people are classified as a sub-group of the Miao people. Th ...

** Pambaram, in

India India, officially the Republic of India, is a country in South Asia. It is the List of countries and dependencies by area, seventh-largest country by area; the List of countries by population (United Nations), most populous country since ...

and

Bangladesh Bangladesh, officially the People's Republic of Bangladesh, is a country in South Asia. It is the List of countries and dependencies by population, eighth-most populous country in the world and among the List of countries and dependencies by ...

* Gaming and other tops **

Dreidel A dreidel, also dreidle or dreidl, ( ; , plural: ''dreydlech''; ) is a four-sided spinning top, played with during the Jewish holiday of Hanukkah. The dreidel is a Jewish variant on the teetotum, a gambling toy found in Europe and Latin America ...

, traditionally played during the

Jewish holiday Jewish holidays, also known as Jewish festivals or ''Yamim Tovim'' (, or singular , in transliterated Hebrew []), are holidays observed by Jews throughout the Hebrew calendar.This article focuses on practices of mainstream Rabbinic Judaism. ...

of Hanukkah. ** Pambaram, Lattu, a throwing top used in

and

. ** Levitating top ** Perinola, a six-sided top, very similar to the dreidel, that is used for a similar game in Latin America. **

Rattleback A rattleback is a semi-ellipsoidal top which will rotate on its axis in a preferred direction. If spun in the opposite direction, it becomes unstable, "rattles" to a stop and reverses its spin to the preferred direction. For most rattlebacks the ...

, or celt, a top that reverses its spin direction ** Teetotum ** Tippe top ** Trompo, or "Whipping top" ** Wizzzer

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

ruby 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 sapph ...

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, porcela ...

tungsten carbide Tungsten carbide (chemical formula: ) is 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 shapes through sintering for use in in ...

, 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 ...

, 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/rotational mass, second moment of mass, or most accurately, rotational inertia, of a rigid body is defined relatively to a rotational axis. It is the ratio between ...

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. Types of friction include dry, fluid, lubricated, skin, and internal -- an incomplete list. The study of t ...

and

torque In physics and mechanics, torque is the rotational analogue of linear force. It is also referred to as the moment of force (also abbreviated to moment). The symbol for torque is typically \boldsymbol\tau, the lowercase Greek letter ''tau''. Wh ...

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 Angular momentum (sometimes called moment of momentum or rotational momentum) is the rotational analog of Momentum, linear momentum. It is an important physical quantity because it is a Conservation law, conserved quantity – the total ang ...

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 o ...

, 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 The moment of inertia, otherwise known as the mass moment of inertia, angular/rotational mass, second moment of mass, or most accurately, rotational inertia, of a rigid body is defined relatively to a rotational axis. It is the ratio between ...

and lowering its

center of gravity In physics, the center of mass of a distribution of mass in space (sometimes referred to as the barycenter or balance point) is the unique point at any given time where the weighted relative position of the distributed mass sums to zero. For ...

. 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. An exhaustive description of the mathematics and physics of the top can be found in the four volume monograph of Felix Klein et al.

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 and COVID pandemic), caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), began with an disease outbreak, outbreak of COVID-19 in Wuhan, China, in December ...

contests would be often held online, with contestants submitting videos.

In popular culture

The

Jean Shepherd Jean Parker "Shep" Shepherd Jr. (July 26, 1921 – October 16, 1999) was an American storytelling, storyteller, humorist, radio and TV personality, writer, and actor. With a career that spanned decades, Shepherd is known for the film ''A Christm ...

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 by bohemian writer

Franz Kafka Franz Kafka (3 July 1883 – 3 June 1924) was a novelist and writer from Prague who was Jewish, Austrian, and Czech and wrote in German. He is widely regarded as a major figure of 20th-century literature. His work fuses elements of Litera ...

. Rock band

The Cure The Cure are an English Rock music, rock band formed in Crawley in 1976 by Robert Smith (musician), Robert Smith (vocals, guitar) and Lol Tolhurst (drums). The band's current line-up comprises Smith, Perry Bamonte (guitar and keyboards), Reev ...

released The Top album in 1984, named, and at least partially inspired, by the toy of the same name. The album includes the title track in which the sound of a spinning top can be heard at the beginning of the song. The top is a focal element and metaphysical symbol in the movie '' Inception'' (2010), directed by

Christopher Nolan Sir Christopher Edward Nolan (born 30 July 1970) is a British and American filmmaker. Known for his Cinema of the United States, Hollywood Blockbuster (entertainment), blockbusters with complex storytelling, he is considered a leading filmma ...

and starring

Leonardo DiCaprio Leonardo Wilhelm DiCaprio (; ; born November 11, 1974) is an American actor and film producer. Known for Leonardo DiCaprio filmography, his work in biographical and period films, he is the recipient of List of awards and nominations received ...

. 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 song "Spin the Magic", was chosen as the theme art and the main motif for the 20th edition of Junior Eurovision Song Contest, which will be held in

Yerevan Yerevan ( , , ; ; sometimes spelled Erevan) is the capital and largest city of Armenia, as well as one of the world's List of oldest continuously inhabited cities, oldest continuously inhabited cities. Situated along the Hrazdan River, Yerev ...

Armenia Armenia, officially the Republic of Armenia, is a landlocked country in the Armenian Highlands of West Asia. It is a part of the Caucasus region and is bordered by Turkey to the west, Georgia (country), Georgia to the north and Azerbaijan to ...