Ball (association football)

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Adidas Telstar-style 32-panel ball, with the familiar black and white spherical truncated icosahedron pattern, introduced in 1970 Football Pallo valmiina-cropped.jpg
Adidas Telstar-style 32-panel ball, with the familiar black and white spherical truncated icosahedron pattern, introduced in 1970

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. [1] Additional, more stringent standards are specified by FIFA and other big governing bodies for the balls used in the competitions they sanction.

Contents

Early footballs began as animal bladders or stomachs that would easily fall apart if kicked too much. Improvements became possible in the 19th century with the introduction of rubber and discoveries of vulcanization by Charles Goodyear. The modern 32-panel ball design was developed in 1962 by Eigil Nielsen, and technological research continues to develop footballs with improved performance. The 32-panel ball design was soon joined by 24-panel balls as well as 42-panel balls, both of which improved on performance prior to 2007.[ citation needed ]

A black-and-white patterned spherical truncated icosahedron design, brought to prominence by the Adidas Telstar, has become a symbol of association football. [2] Many different designs of balls exist, varying both in appearance and physical characteristics. [3]

History

First years of football codes

UEFA Champions League ball 2021-2022 UEFA Champions League ball 2021-2022.jpg
UEFA Champions League ball 2021-2022
Early football ball (with its leather lace) used in the 1930 FIFA World Cup Final 1930 World Cup Final Ball Uruguay.jpg
Early football ball (with its leather lace) used in the 1930 FIFA World Cup Final
Leather ball used in the football tournament at the 1936 Summer Olympics Fussball 1936.jpg
Leather ball used in the football tournament at the 1936 Summer Olympics

In the year 1863, the first specifications for footballs were set by the Football Association. Previous to this, footballs were made out of inflated animal bladder, with later leather coverings to help footballs maintain their shapes and sizes. [4] In 1872, the specifications were revised and have been kept essentially unchanged by the International Football Association Board. Differences in footballs made since this rule came into effect have been with the material used to create them.

Footballs have dramatically changed over time. During medieval times balls were normally made from an outer shell of leather filled with cork shavings. [5] Another method of creating a ball was using animal bladders to make it inflatable inside. However, these two styles of footballs were easy to puncture and were inadequate for kicking. It was not until the 19th century that footballs developed a more modern appearance.

Vulcanization

In 1838, Charles Goodyear introduced vulcanized rubber, which dramatically improved football. [6] Vulcanization is the treatment of rubber to give it certain qualities such as strength, elasticity, and resistance to solvents. Vulcanization of rubber also helps the football resist moderate heat and cold. Vulcanization helped create inflatable bladders that pressurize the outer panel arrangement of the football. Charles Goodyear's innovation increased the bounce ability of the ball and made it easier to kick. Most balls of this time had tanned leather with eighteen sections stitched together. These were arranged in six panels of three strips each. [7] [8]

Reasons for improvement

During the 1900s, footballs were made out of leather with a lace of the same material (known as tiento in Spanish) used to stitch the panels. Although leather was perfect for bouncing and kicking the ball, when heading the football (hitting it with the player's head) it was usually painful. This problem was most probably due to water absorption of the leather from rain, which caused a considerable increase in weight, causing head or neck injury. By around 2017, this had also been associated with dementia in former players. [9] Another problem of early footballs was that they deteriorated quickly, as the plastic used in manufacturing varied in thickness and in quality. [7]

The ball without the leather lace was developed and patented by Romano Polo, Antonio Tossolini and Juan Valbonesi in 1931 in Bell Ville, Córdoba Province, Argentina. [10] [11] This innovative ball (named Superball) was adopted by the Argentine Football Association as the official ball for its competitions since 1932. [12]

Latest developments

Adidas Torfabrik football used in the Bundesliga in 2011 Torfabrik 02.jpg
Adidas Torfabrik football used in the Bundesliga in 2011

The deformation of the football when it is kicked or when the ball hits a surface is tested. Two styles of footballs have been tested by the Sports Technology Research Group of Wolfson School of Mechanical and Manufacturing Engineering in Loughborough University; these two models are called the Basic FE model and the Developed FE model of the football. The basic model considered the ball as a spherical shell with isotropic material properties. The developed model also used isotropic material properties but included an additional stiffer stitching seam region.

Manufacturers are experimenting with microchips and even cameras embedded inside the ball. The microchip technology was considered for the goal-line technology. The ball used in the 2018 FIFA World Cup in Russia had an embedded chip which did not provide any measurements, but provided 'user experience' via smartphone after connecting with the ball via NFC. [13] [14] [15]

Future developments

Companies such as Umbro, Mitre, Adidas, Nike, Select and Puma are releasing footballs made out of new materials which are intended to provide more accurate flight and more power to be transferred to the football. [16] [17]

Specification

Construction

Modern footballs are more complex than past footballs. Most footballs consist of twelve regular pentagonal and twenty regular hexagonal panels positioned in a truncated icosahedron spherical geometry. [5] Some premium-grade 32-panel balls use non-regular polygons to give a closer approximation to sphericality. [18] The inside of the football is made up of a latex or butyl rubber bladder which enables the football to be pressurised. The ball's outside is made of leather, synthetic leather, polyurethane or PVC panels. The surface can be textured, weaved or embossed for greater control and touch. The panel pairs are either machine-stitched, hand-stitched or thermo-bonded (glued and bonded by heat) along the edge. [6] To prevent water absorption balls may be specially coated, or the stitches bonded with glue. The size of a football is roughly 22 cm (8.66 inches) in diameter for a regulation size 5 ball. Rules state that a size 5 ball must be 68 to 70 cm (27 to 28 in) in circumference. [19] Averaging that to 69 cm (27 in) and then dividing by π gives a diameter of about 22 cm (8.7 in).

Size and weight

Regulation size and weight for a football is a circumference of 68–70 cm (27–28 in) and a weight of 410–450 g (14–16 oz). The ball is inflated to a pressure of 0.6–1.1 bars (8.7–16.0 psi) at sea level. [20] This is known as "Size 5". Smaller balls, Sizes 1, 3, and 4, are also produced for younger players or as training tools. [20] Following consultations with football associations, clubs and ball manufacturers, FIFA has developed non-compulsory recommendations for appropriate sizes, circumferences and weights of balls for different age groups of youth football. [21]

Types of ball

There are different types of football balls depending on the match and turf including training footballs, match footballs, professional match footballs, beach footballs, street footballs, indoor footballs, turf balls, futsal footballs and mini/skills footballs. [22]

A professional/premium match soccer ball Adidas MLS Tango 12 soccer ball.jpg
A professional/premium match soccer ball

Suppliers

Many companies throughout the world produce footballs. The earliest balls were made by local suppliers where the game was played. It is estimated that 70% of all footballs are made in Sialkot, Pakistan with other major producers being China and India. [23]

As a response to the problems with the balls in the 1962 FIFA World Cup,[ clarification needed ] Adidas created the Adidas Santiago [24] – this led to Adidas winning the contract to supply the match balls for all official FIFA and UEFA matches, which they have held since the 1970s, and also for the Olympic Games. [25] They also supply the ball for the UEFA Champions League which is called the Adidas Finale.

FIFA World Cup

In early FIFA World Cups, match balls were mostly provided by the hosts from local suppliers. Records indicate a variety of models being used within individual tournaments and even, on some occasions, individual games. Over time, FIFA took more control over the choice of ball used. Since 1970 Adidas have supplied official match balls (all of which were made in Sialkot, Pakistan) for every tournament. [26]

League balls

The most up-to-date balls used in various club football competitions as of 2024–25 season are:

Unicode

The association football symbol ( U+26BD⚽SOCCER BALL) was introduced by computing standard Unicode. [30] The symbol was representable in HTML as ⚽ or ⚽.[ citation needed ] The addition of this symbol follows a 2008 proposal by Karl Pentzlin. [31]

See also

Notes

  1. ↑ UEFA Champions League only
  2. ↑ UEFA Women's Champions League only
  3. 1 2 3 EFL Championship, Leagues One and Two only

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References

  1. ↑ Mazhar, Talha. "citation". fifa.com. Fifa. Archived from the original on 15 December 2022. Retrieved 15 December 2022.
  2. ↑ Kotschick, Dieter (2006). "The Topology and Combinatorics of Soccer Balls". American Scientist. 94 (4): 350–357. doi:10.1511/2006.60.1001. Archived from the original on 3 October 2020. Retrieved 3 October 2019.
  3. ↑ Hong, Sungchan; Asai, Takeshi (29 May 2014). "Effect of panel shape of soccer ball on its flight characteristics". Scientific Reports. 4 (1): 5068. Bibcode:2014NatSR...4E5068H. doi:10.1038/srep05068. PMC   4038026 . PMID   24875291.
  4. ↑ "Football World – Early History". Archived from the original on 16 June 2006. Retrieved 9 June 2006. (Accessed 9 June 2006)
  5. 1 2 Price, D. S., Jones, R.Harland, A. R. 2006. Computational modeling of manually stitched footballs. Proceedings of the Institution of Mechanical Engineers – Part L — Journal of Materials: Design & Applications. Vol. 220 Issue 4, p259-268.
  6. 1 2 Materials Science and Engineering: A Volume 420, Issues 1–2, 25 March 2006, Pages 100–108
  7. 1 2 Viscoelasticity of multi-layer textile reinforced polymer composites used in footballs. Journal of Materials Science. Volume 43, Number 8 / April 2008. 2833–2843.
  8. ↑ "Oldest Soccer Ball". soccerballworld.com. 2013. Archived from the original on 30 August 2017. Retrieved 16 August 2013.
  9. ↑ Ling, Helen; Morris, Huw R.; Neal, James W.; Lees, Andrew J.; Hardy, John; Holton, Janice L.; Revesz, Tamas; Williams, David D. R. (March 2017). "Mixed pathologies including chronic traumatic encephalopathy account for dementia in retired association football (soccer) players". Acta Neuropathologica . 133 (3): 337–352. doi:10.1007/s00401-017-1680-3. PMC   5325836 . PMID   28205009.
  10. ↑ "La primera fábrica argentina de pelotas". iProfesional (in Spanish). Emprendimientos Corporativos S.A. 18 July 2018. Archived from the original on 18 April 2019. Retrieved 29 September 2019.
  11. ↑ Wall, Alejandro (July 2013). "Los avances tecnológicos en el fútbol". Conexión Brando (in Spanish). Archived from the original on 22 June 2013. Retrieved 29 September 2019.
  12. ↑ "Pelota sin tientos". La Nueva Provincia (in Spanish). 5 February 2012. Archived from the original on 11 April 2019. Retrieved 29 September 2019.
  13. ↑ Victor, Daniel (18 December 2017). "Why Doesn't the N.F.L. Use Tracking Technology for First-Down Calls? - The New York Times". The New York Times. Archived from the original on 25 March 2020. Retrieved 25 March 2020.
  14. ↑ "World Cup: A closer look at the technology inside the 2018 World Cup soccer ball - Los Angeles Times". Los Angeles Times . 21 May 2018. Archived from the original on 25 March 2020. Retrieved 25 March 2020.
  15. ↑ "How Does The NFC Tech In The 2018 adidas Telstar Ball Work? - SoccerBible". Archived from the original on 25 March 2020. Retrieved 25 March 2020.
  16. ↑ "The History of the Soccer Ball Part 2". Soccer Football World. Rig-Tech Inc. 9 June 2006. Archived from the original on 19 June 2010. Retrieved 29 September 2019.
  17. ↑ "World's First Intelligent Soccer Ball Receives FIFA Recognition". Cision. PR Newswire. 6 July 2012. Archived from the original on 23 July 2015. Retrieved 21 July 2015.
  18. ↑ Eastaway, Rob; Haigh, John (15 October 2005). "Balls; and why theyaren't quite spherical". How to Take a Penalty: The Hidden Mathematics of Sport. Robson. pp. 4–5. ISBN   9781861058362.
  19. ↑ "IFAB".[ permanent dead link ]
  20. 1 2 "Laws of the Game 2017/2018" (PDF). Archived from the original (PDF) on 13 November 2017. Retrieved 12 November 2017.
  21. ↑ "Youth Football Specification Recommendations" (PDF). 12 October 2022.
  22. ↑ "Soccer Balls". Archived from the original on 20 September 2013. Retrieved 14 October 2013., "Soccer". Archived from the original on 21 August 2017. Retrieved 14 October 2013. , 14 October 2013. Retrieved 2013-10-14.
  23. ↑ Wright, Tom (28 April 2010). "A Soccer Sore Point". The Wall Street Journal. Archived from the original on 10 August 2014. Retrieved 28 June 2014.
  24. ↑ The Blizzard: Issue 6. Blizzard Media Limited. 2012. ISBN   978-1-908940-06-3. Archived from the original on 27 August 2012.
  25. ↑ "football World – Team Geist". Archived from the original on 15 July 2010. Retrieved 9 June 2006. (Accessed 9 June 2006)
  26. ↑ Platt, Oli. "FIFA World Cup balls: From the Tango to the Jabulani | Goal.com". goal.com. Archived from the original on 25 June 2018. Retrieved 25 June 2018.
  27. ↑ "DERBYSTAR unveils 2023/24 official match balls" (Press release). Frankfurt: Deutsche Fußball Liga. Retrieved 31 May 2023.
  28. ↑ Eredivisie, Eerste Divisie and Tweede Divisie only
  29. ↑ KNVB Cup and Johan Cruyff Shield only
  30. ↑ "Miscellaneous Symbols Range: 2600–26FF, The Unicode Standard, Version 12.0" (PDF). Unicode Consortium. 2009. Archived (PDF) from the original on 19 September 2011. Retrieved 14 March 2010.
  31. ↑ Pentzlin, Karl (2 April 2008). "Proposal to encode a SOCCER BALL symbol in Unicode" (PDF). Archived (PDF) from the original on 22 June 2011. Retrieved 14 March 2010.
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