Soccer Ball

A football, soccer ball, or association football ball is the ball used in the sport of association football. The name of the ball varies according to whether the sport is called "football", "soccer", or "association football". The ball's spherical shape, as well as its size, weight, 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 subordinate governing bodies for the balls used in the competitions they sanction.

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 today to develop footballs with improved performance.

History

In 1863, the first specifications for footballs were laid down by the Football Association. Previous to this, footballs were made out of inflated leather, with later leather coverings to help footballs maintain their shapes. In 1872 the specifications were revised, and these rules have been left essentially unchanged as defined by the International Football Association Board. Differences in footballs created since this rule came into effect have been to do with the material used in their creation.

Footballs have gone through a dramatic change over time. During medieval times balls were normally made from an outer shell of leather filled with cork shavings. Another method of creating a ball was using animal bladders for the inside of the ball making it inflatable. However, these two styles of creating footballs made it easy for the ball to puncture and were inadequate for kicking. It was not until the 19th century that footballs developed into what a football looks like today.

Vulcanization

In 1838, Charles Goodyear introduced the use of rubber and their discoveries of vulcanization, which dramatically improved the football. 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 of the balls of this time had tanned leather with eighteen sections stitched together. These were arranged in six panels of three strips each.

Reasons for improvement

During the 1900s, footballs were made out of rubber and leather which was perfect for bouncing and kicking the ball; however, 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. Another problem of early footballs was that they deteriorated quickly, as the leather used in manufacturing the footballs varied in thickness and in quality.

Construction

Today's footballs are more complex than past footballs. Most modern footballs consist of twelve regular pentagonal and twenty regular hexagonal panels positioned in a truncated icosahedron spherical geometry. Some premium-grade 32-panel balls use non-regular polygons to give a closer approximation to sphericality. The inside of the football is made up of a latex bladder which enables the football to be pressurized. The ball's panel pairs are stitched along the edge; this procedure can either be performed manually or with a machine. The size of a soccer ball is roughly 22 cm (8.65 inches) in diameter for a regulation size 5 ball. Rules state that a size 5 ball must be 68 to 70 cm in circumference. Averaging that to 69 cm and then dividing by π gives about 22 cm for a diameter.

The ball's weight must be in the range of 410 to 450 grams (14 to 16 oz) and inflated to a pressure of between 0.6 and 1.1 bars (8.5 and 15.6 psi) at sea level.

There are a number of 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.

Outline

SPORTS WORLD

Soccer | Football

The goalkeepers are the only players allowed to touch the ball with their hands or arms while it is in play and only in their penalty area. Outfield players mostly use their feet to strike or pass the ball, but may also use their head or torso to do so instead. The team that scores the most goals by the end of the match wins. The Laws of the Game are the codified rules that help define association football. They are the only rules of association football subscribed to by the sport's governing body FIFA.

Gameplay: Two teams of eleven players each compete to get the ball into the other team's goal (between the posts and under the bar), thereby scoring a goal. The team that has scored more goals at the end of the game is the winner; if both teams have scored an equal number of goals then the game is a draw.

Players: Each team consists of a maximum of eleven players (excluding substitutes), one of whom must be the goalkeeper.

Referee: Is the person responsible for enforcing the Laws of the Game during the course of a match.

Assistant referee: The assistant referee's duties generally consist of judging when the ball has left the field of play.

Equipment: The basic equipment or kit players are required to wear includes a shirt, shorts, socks, footwear and adequate shin guards.

Game duration: A standard adult football match consists of two periods of 45 minutes each, known as halves. Each half runs continuously, meaning that the clock is not stopped when the ball is out of play.

Misconduct (Foul): Fouls and misconduct in football/soccer are acts committed by players which are deemed by the referee to be unfair and are subsequently penalized.

Positions: A team is made up of one goalkeeper and ten outfield players who fill various defensive, midfield, and attacking positions depending on the formation deployed.

Player styles: Most players will play in a limited range of positions throughout their career, as each position requires a particular set of skills and physical attributes.

Formations: The formation describes how the players in a team are positioned on the pitch. Different formations can be used depending on whether a team wishes to play more attacking or defensive football.

Tactics and skills: Well-organized and well-prepared teams are often seen beating teams with supposedly more skillful players, even over time.

Advanced skills: There are various individual skills and team tactics needed to play effective football.
Team Positions

SPORTS WORLD

Team Positions

In the sport, each of the 11 players on a team is assigned to a particular position on the field of play. A team is made up of one goalkeeper and ten outfield players who fill various defensive, midfield, and attacking positions depending on the formation deployed. These positions describe both the player's main role and their area of operation on the pitch.

Goalkeeper: Goalkeeper, often shortened to keeper or goalie, is one of the major positions of association football.

Centre-back: The job of the centre-back is to stop opposing players, particularly the strikers, from scoring, and to bring the ball out from their penalty area.

Sweeper: The sweeper is a defensive position in football, so called because their job is to 'sweep up' any attacking moves which pass other defenders.

Full-back: The full-backs take up the holding wide positions and traditionally stayed in defense at all times, until a set-piece.

Wing-back: The wing-back (or attacking full-back) are defenders with heavier emphasis on attack.

Centre midfield: Central midfielders provide a link between defense and attack, fulfilling a number of duties and operating primarily in the middle third of the pitch.

Defensive midfield: A defensive midfielder is a central midfielder who is stationed in front of the defenders to provide more defensive protection, thus "holding back" when the rest of the midfield supports the attack.

Attacking midfield: An attacking midfielder is a midfield player who is positioned in an advanced midfield position, usually between central midfield and the team's forwards, and who has a primarily offensive role.

Wide midfield: Is a midfielder who is stationed to the left or right of central midfield.

Centre forward: A centre forward (main striker) has the key task of scoring goals and for this reason acts as the focal point of the majority of attacking play by a team.

Second striker: They are required to be more "nippy", quick, mobile, and skillful, helping to create goals and scoring opportunities for centre forwards.

Winger: Is an attacking player who is stationed in a wide position near the touchlines.

SPORTS

Soccer | Football

The goalkeepers are the only players allowed to touch the ball with their hands or arms while it is in play and only in their penalty area. Outfield players mostly use their feet to strike or pass the ball, but may also use their head or torso to do so instead. The team that scores the most goals by the end of the match wins.

The Laws of the Game are the codified rules that help define association football. They are the only rules of association football subscribed to by the sport's governing body FIFA.