Both the ball and the field of play are elliptical in shape. No more than 18 players of each team are permitted to be on the field at any time.
Up to four interchange (reserve) players may be swapped for those on the field at any time during the game. In Australian rules terminology, these players wait for substitution "on the bench"—an area with a row of seats on the sideline. Players must interchange through a designated interchange "gate" with strict penalties for too many players from one side on the field.
There is no offside rule nor are there set positions in the rules; unlike many other forms of football, players from both teams may disperse across the whole field before the start of play. However, a typical on-field structure consists of six forwards, six defenders or "backmen" and six midfielders, usually two wingmen, one centre and three followers, including a ruckman, ruck-rover and rover. Only four players from each team are allowed within the centre square (50 metres (55 yd)) at every centre bounce, which occurs at the commencement of each quarter, and to restart the game after a goal is scored. There are also other rules pertaining to allowed player positions during set plays (that is after a mark or free kick) and during kick-ins following the scoring of a behind.
Other articles related to "field, fields":
... of documenting a solution to a design problem in a particular field of expertise ... The idea was introduced by the architect Christopher Alexander in the field of architecture and has been adapted for various other disciplines, including computer science ... An organized collection of design patterns that relate to a particular field is called a pattern language ...
... variant of Maxwell's equation expresses the electric E field and the magnetic B field in terms of the total charge and total current present including the charges and currents at the atomic level ... The cost of this factorization is that additional fields, the displacement field D and the magnetizing field-H, are defined that need to be determined ... constituent equations relate the additional fields to the electric field E and the magnetic B-field, often through a simple linear relation ...
... Faraday's law describes how a time varying magnetic field creates ("induces") an electric field ... example, a rotating bar magnet creates a changing magnetic field, which in turn generates an electric field in a nearby wire ...
... An electromagnetic field (also EMF or EM field) is a physical field produced by moving electrically charged objects ... It affects the behavior of charged objects in the vicinity of the field ... The electromagnetic field extends indefinitely throughout space and describes the electromagnetic interaction ...
... Gauss's law describes the relationship between an electric field and the electric charges that cause it The electric field points away from positive charges and towards negative charges ... In the field line description, electric field lines begin only at positive electric charges and end only at negative electric charges ... 'Counting' the number of field lines in a closed surface, therefore, yields the total charge enclosed by that surface ...
Famous quotes containing the word field:
“Mine was, as it were, the connecting link between wild and cultivated fields; as some states are civilized, and others half-civilized, and others savage or barbarous, so my field was, though not in a bad sense, a half-cultivated field. They were beans cheerfully returning to their wild and primitive state that I cultivated, and my hoe played the Ranz des Vaches for them.”
—Henry David Thoreau (18171862)
“We need a type of theatre which not only releases the feelings, insights and impulses possible within the particular historical field of human relations in which the action takes place, but employs and encourages those thoughts and feelings which help transform the field itself.”
—Bertolt Brecht (18981956)
“I dont like comparisons with football. Baseball is an entirely different game. You can watch a tight, well-played football game, but it isnt exciting if half the stadium is empty. The violence on the field must bounce off a lot of people. But you can go to a ball park on a quiet Tuesday afternoon with only a few thousand people in the place and thoroughly enjoy a one-sided game. Baseball has an aesthetic, intellectual appeal found in no other team sport.”
—Bowie Kuhn (b. 1926)