A ball is a round object (usually spherical, but can sometimes be ovoid) [1] with several uses. It is used in ball games, where the play of the game follows the state of the ball as it is hit, kicked or thrown by players. Balls can also be used for simpler activities, such as catch or juggling. Balls made from hard-wearing materials are used in engineering applications to provide very low friction bearings, known as ball bearings. Black-powder weapons use stone and metal balls as projectiles.
Although many types of balls are today made from rubber, this form was unknown outside the Americas until after the voyages of Columbus. The Spanish were the first Europeans to see the bouncing rubber balls (although solid and not inflated) which were employed most notably in the Mesoamerican ballgame. Balls used in various sports in other parts of the world prior to Columbus were made from other materials such as animal bladders or skins, stuffed with various materials.
As balls are one of the most familiar spherical objects to humans, the word "ball" may refer to or describe spherical or near-spherical objects.
"Ball" is used metaphorically sometimes to denote something spherical or spheroid, e.g., armadillos and human beings curl up into a ball, making a fist into a ball.
The first known use of the word ball in English in the sense of a globular body that is played with was in 1205 in Layamon's Brut, or Chronicle of Britain in the phrase, "Summe heo driuen balles wide ȝeond Þa feldes." ("Some of them drove balls far across the fields.") The word came from the Middle English bal (inflected as ball-e, -es, in turn from Old Norse böllr (pronounced [bɔlːr] ; compare Old Swedish baller, and Swedish boll) from Proto-Germanic ballu-z (whence probably Middle High German bal, ball-es, Middle Dutch bal), a cognate with Old High German ballo, pallo, Middle High German balle from Proto-Germanic *ballon (weak masculine), and Old High German ballâ, pallâ, Middle High German balle, Proto-Germanic *ballôn (weak feminine). No Old English representative of any of these is known. (The answering forms in Old English would have been beallu, -a, -e—compare bealluc, ballock.) If ball- was native in Germanic, it may have been a cognate with the Latin foll-is in sense of a "thing blown up or inflated." In the later Middle English spelling balle the word coincided graphically with the French balle "ball" and "bale" which has hence been erroneously assumed to be its source. French balle (but not boule) is assumed to be of Germanic origin, itself, however. In Ancient Greek the word πάλλα (palla) for "ball" is attested [2] besides the word σφαίρα (sfaíra), sphere . [3]
Some form of game with a ball is found portrayed on Egyptian monuments. [4] In Homer, Nausicaa was playing at ball with her maidens when Odysseus first saw her in the land of the Phaeacians (Od. vi. 100). And Halios and Laodamas performed before Alcinous and Odysseus with ball play, accompanied with dancing (Od. viii. 370). [5] The most ancient balls in Eurasia have been discovered in Karasahr, China and are 3000 years old. They were made of hair-filled leather. [6]
Among the ancient Greeks, games with balls (σφαῖραι) were regarded as a useful subsidiary to the more violent athletic exercises, as a means of keeping the body supple, and rendering it graceful, but were generally left to boys and girls. Of regular rules for the playing of ball games, little trace remains, if there were any such. The names in Greek for various forms, which have come down to us in such works as the Ὀνομαστικόν of Julius Pollux, imply little or nothing of such; thus, ἀπόρραξις (aporraxis) only means the putting of the ball on the ground with the open hand, οὐρανία (ourania), the flinging of the ball in the air to be caught by two or more players; φαινίνδα (phaininda) would seem to be a game of catch played by two or more, where feinting is used as a test of quickness and skill. Pollux (i. x. 104) mentions a game called episkyros (ἐπίσκυρος), which has often been looked on as the origin of football. It seems to have been played by two sides, arranged in lines; how far there was any form of "goal" seems uncertain. [5] It was impossible to produce a ball that was perfectly spherical; [7] children usually made their own balls by inflating pig's bladders and heating them in the ashes of a fire to make them rounder, [7] although Plato (fl. 420s BC – 340s BC) described "balls which have leather coverings in twelve pieces". [8]
Among the Romans, ball games were looked upon as an adjunct to the bath, and were graduated to the age and health of the bathers, and usually a place (sphaeristerium) was set apart for them in the baths (thermae). There appear to have been three types or sizes of ball, the pila, or small ball, used in catching games, the paganica, a heavy ball stuffed with feathers, and the follis, a leather ball filled with air, the largest of the three. This was struck from player to player, who wore a kind of gauntlet on the arm. There was a game known as trigon, played by three players standing in the form of a triangle, and played with the follis, and also one known as harpastum, which seems to imply a "scrimmage" among several players for the ball. These games are known to us through the Romans, though the names are Greek. [5]
The various modern games played with a ball or balls and subject to rules are treated under their various names, such as polo, cricket, football, etc. [5]
In sports, many modern balls are pressurized. Some are pressurized at the factory (e.g. tennis, squash (sport)) and others are pressurized by users (e.g. volleyball, basketball, football). Almost all pressurized balls gradually leak air. If the ball is factory pressurized, there is usually a rule about whether the ball retains sufficient pressure to remain playable. [9] [10] Depressurized balls lack bounce and are often termed "dead". In extreme cases, a dead ball becomes flaccid. If the ball is pressured on use, there are generally rules about how the ball is pressurized before the match, and when (or whether) the ball can be repressurized or replaced.
Due to the ideal gas law, ball pressure is a function of temperature, generally tracking ambient conditions. Softer balls that are struck hard (especially squash balls) increase in temperature due to inelastic collision.
In outdoor sports, wet balls play differently than dry balls. In indoor sports, balls may become damp due to hand sweat. Any form of humidity or dampness will affect a ball's surface friction, which will alter a player's ability to impart spin on the ball. The action required to apply spin to a ball is governed by the physics of angular momentum. Spinning balls travelling through air (technically a fluid) will experience the Magnus effect, which can produce lateral deflections in addition to the normal up-down curvature induced by a combination of wind resistance and gravity.
Sport | Shape | Weigth | Diameter | Circumferency | Pressure | Material | Image |
---|---|---|---|---|---|---|---|
Basketball | Sphere | 580-620 g | 75/π-77/π cm | 75-77 cm | leather, artificial/composite/synthetic leather | ||
Cycle ball | Sphere | 500-600 g | 17-18 cm | - | Textile (case) | ||
Golf | Sphere | 1.62 ounces (46 g) | 1.68 inches (4.3 cm) | - | elastomeric material | ||
Polo | Sphere | 4.25–4.75 ounces (120–135 g) | 3–3.5 inches (7.6–8.9 cm) | - | |||
Sepaktakraw | Sphere | 170-180 g | 41/π-43/π cm | 41-43 cm | woven synthetic fiber | ||
Tchoukball | Sphere | 425-475 g | 58/π-60/π cm | 58-60 cm | |||
Waterpolo | Sphere | 400-450 g | 68/π-71/π cm | 68-71 cm | 7.5–8.5 pounds per square inch (52–59 kPa) | ||
Bat and ball sports | |||||||
Baseball | Sphere | 5–5.25 ounces (142–149 g) | 9/π-9.5/π inches | 9–9.25 inches (22.9–23.5 cm) |
| ||
Softball | Sphere | 6.25–7 ounces (177–198 g) | 11.875/π-12.125/π inches | 11.875–12.125 inches (30.16–30.80 cm) |
| ||
Cricket | Sphere | 5.5–5.75 ounces (156–163 g) | 8.81/π-9/π inches | 8.81–9 inches (22.4–22.9 cm) | |||
Football codes | |||||||
American football | Lemon [11] | 14–15 ounces (400–430 g) | 11–11.25 inches (27.9–28.6 cm) (longitudinal) | 28–28.5 inches (71–72 cm) (longitudinal) × 21–21.25 inches (53.3–54.0 cm) (transversal) | urethane (bladder), case (leather) | ||
Asocciation football | Sphere | 14–16 ounces (400–450 g) | 27/π-28/π inches | 27–28 inches (69–71 cm) | 8.5–15.6 pounds per square inch (59–108 kPa) | - | |
Beach soccer | Sphere | 400-440 g | 68/π-70/π cm | 68-70 cm | - | ||
Futsal | Sphere | 400-440 g | 62/π-64/π cm | 62-64 cm | - | ||
Australian rules football | Prolate spheroid | - | - | 72 - 73 cm (elliptic) × 54.5 -55.5 cm (circular) | |||
Gaelic football | Sphere | 480-500 g | - | 68-70 cm | - | ||
Rugby league | Prolate spheroid | leather | |||||
Rugby union | Prolate spheroid | 410 - 460 g | 28-30 cm (longitudinal) | 74 - 77 (elliptic) × 58 - 62 (circular) | 9.5–10 pounds per square inch (66–69 kPa) | leather or synthetic material | |
Handball | |||||||
Handball (with resine) | Sphere | 425-475 g | - | 58-60 cm | leather or synthetic | ||
Handball (without resine) | Sphere | 400-425 g | - | 55.5-57.5 cm | leather or synthetic | ||
Beach handball | Sphere | 350-370 g | - | 54-56 cm | rubber | ||
Hockey | |||||||
Bandy | Sphere | 6.24-6.38 cm | |||||
Field hockey | Sphere | 156-163 g | - | 22.4-23.5 cm | - | ||
Rinkball | Sphere | 60 g | 6 cm | ||||
Rolley hockey | Sphere | 155 g | 23 cm | ||||
Lacrosse | |||||||
Lacrosse | Sphere | 5–5.25 ounces (142–149 g) | - | 7.75–8 inches (19.7–20.3 cm) | rubber | ||
Women lacrosse | Sphere | 142-149 g | - | 20-20.3 cm | elastomeric | ||
Racquet sports | |||||||
Squash | Sphere | 23-25 g | 3.95-4.05 cm | - | - | ||
Table tennis | Sphere | 2.7 g | 4 cm | - | plastic | ||
Tennis | Sphere | 56–59.4 grams (1.98–2.10 oz) | 6.54–6.86 centimetres (2.57–2.70 in) | - | |||
Volleyball | |||||||
Volleyball | Sphere | 260 - 280 g | - | 65-67 cm | 4.26–4.61 pounds per square inch (29.4–31.8 kPa) | rubber (bladder), leather or synthetic leather (case) | |
Beach volleyball | Sphere | 260 - 280 g | - | 66-68 cm | rubber (bladder), leather or synthetic leather (case) |
Cue sports are a wide variety of games of skill played with a cue, which is used to strike billiard balls and thereby cause them to move around a cloth-covered table bounded by elastic bumpers known as cushions. Cue sports are also collectively referred to as billiards, though this term has more specific connotations in some varieties of English.
Bocce, sometimes anglicized as bocce ball, bocci, or boccie, is a ball sport belonging to the boules family. Developed into its present form in Italy, it is closely related to English bowls and French pétanque, with a common ancestry from ancient games played in the Roman Empire. Bocce is played around Western, Southern, and Southeastern Europe, as well as in overseas areas with historical Italian immigrant population, including Australia, North America, and South America, principally Argentina and the southern Brazilian states of Paraná, Rio Grande do Sul and Santa Catarina. Initially only played by Italian immigrants, the game has slowly gained popularity among descendant generations and outside the Italian diaspora.
Boules, or jeu de boules, is a collective name for a wide range of games similar to bowls and bocce in which the objective is to throw or roll heavy balls as closely as possible to a small target ball, called the jack. 'Boules' itself is a French loanword that usually refers to the game especially played in France.
A football is a ball inflated with air that is used to play one of the various sports known as football. In these games, with some exceptions, goals or points are scored only when the ball enters one of two designated goal-scoring areas; football games involve the two teams each trying to move the ball in opposite directions along the field of play.
A ball is a spherical round object with various uses.
A golf ball is a ball designed to be used in golf. Under the rules of golf, a golf ball has a mass no more than 1.620 oz (45.93 g), has a diameter not less than 1.680 inches (42.67 mm), and performs within specified velocity, distance, and symmetry limits. Like golf clubs, golf balls are subject to testing and approval by The R&A and the United States Golf Association, and those that do not conform with regulations may not be used in competitions (Rule 5–1).
La soule, later choule, is a traditional team sport that originated in Normandy and Picardy. The ball, called a soule, could be solid or hollow and made of either wood or leather. Leather balls would be filled with hay, bran, horse hair or moss. Sometimes the balls had woolen pompons.
In etymology, doublets are words in a given language that share the same etymological root. Doublets are often the result of loanwords being borrowed from other languages. While doublets may be synonyms, the characterization is usually reserved for words that have diverged significantly in meaning: for example, the English doublets pyre and fire are distinct terms with related meanings that both ultimately descend from the Proto-Indo-European word *péh₂ur.
Kolven is a game originating from the Netherlands. The game is played by four people who hit the ball over a certain distance. The first people to reach their opponents' starting point win. Games can last multiple days.
Medieval football is a modern term used for a wide variety of the localised informal football games which were invented and played in England during the Middle Ages. Alternative names include folk football, mob football and Shrovetide football. These games may be regarded as the ancestors of modern codes of football, and by comparison with later forms of football, the medieval matches were chaotic and had few rules.
Harpastum, also known as harpustum, was a form of ball game played in the Roman Empire. The Romans also referred to it as the small ball game. The ball used was small and hard, probably about the size and solidity of a softball and was stuffed with feathers. The word harpastum is the latinisation of the Greek ἁρπαστόν, the neuter of ἁρπαστός, "carried away", from the verb ἁρπάζω, "to seize, to snatch".
The English word god comes from the Old English god, which itself is derived from the Proto-Germanic *gudą. Its cognates in other Germanic languages include guþ, gudis, guð, god, and got.
A football or soccer ball is the ball used in the sport of association football. The ball's spherical shape, as well as its size, weight, mass, and material composition, are specified by Law 2 of the Laws of the Game maintained by the International Football Association Board. Additional, more stringent standards are specified by FIFA and other big governing bodies for the balls used in the competitions they sanction.
A basketball is a spherical ball used in basketball games. Basketballs usually range in size from very small promotional items that are only a few inches in diameter to extra large balls nearly 2 feet (60 cm) in diameter used in training exercises. For example, a youth basketball could be 27 inches (69 cm) in circumference, while a National Collegiate Athletic Association (NCAA) men's ball would be a maximum of 30 inches (76 cm) and an NCAA women's ball would be a maximum of 29 inches (74 cm). The standard for a basketball in the National Basketball Association (NBA) is 29.5 inches (75 cm) in circumference and for the Women's National Basketball Association (WNBA), a maximum circumference of 28.5 inches (72 cm). High school and junior leagues normally use NCAA, NBA or WNBA sized balls.
Ground billiards is a modern term for a family of medieval European lawn games, the original names of which are mostly unknown, played with a long-handled mallet, wooden balls, a hoop, and an upright skittle or pin. The game, which cue-sports historians have called "the original game of billiards", developed into a variety of modern outdoor and indoor games and sports such as croquet, pool, snooker, and carom billiards. Its relationship to games played on larger fields, such as hockey, golf, and bat-and-ball games, is more speculative. As a broader classification, the term is sometimes applied to games dating back to classical antiquity that are attested via difficult-to-interpret ancient artworks and rare surviving gaming artifacts.
Football is a family of team sports that involve, to varying degrees, kicking a ball to score a goal. Unqualified, the word football generally means the form of football that is the most popular where the word is used. Sports commonly called football include association football ; Australian rules football; Gaelic football; gridiron football ; International rules football; rugby league football; and rugby union football. These various forms of football share, to varying degrees, common origins and are known as "football codes".
Episkyros, or episcyrus was an Ancient Greek ball game. The game was typically played between two teams of 12 to 14 players each, being highly teamwork-oriented. The game allowed full contact and usage of the hands. While it was typically men who played, women also occasionally participated.
Balloon, baloun, balloon-ball or wind-ball is a game similar to the modern game of volleyball, in which a leather ball is batted by the fist or forearm to prevent it from touching the ground. The game was played in ancient Rome where it was known as follis, the Latin word for a leather bag. Such a ball made of leather was quite heavy and so protection might be used such as a leather gauntlet or wooden bracer. The Roman game was considered a sport for boys and old men, as Martial wrote:
Comparison of association football (football/soccer) and rugby union is possible because of the games' similarities and shared origins.
Follis, or Ball of wind, a term used in the 15th and 16th centuries in Spain and Italy, was a hollow ball inflated with air under pressure, able to jump and bounce when impacting at a certain speed with any solid body. Different types of balls of wind were commonly used to play a variety of ball games that were popular in that particular period of time.