Tag (game)

Tag (also known as it, tip you're it or tig [in regions of Britain], and many other names) is a playground game that involves one or more players chasing other players in an attempt to "tag" or touch them, usually with their hands. There are many variations; most forms have no teams, scores, or equipment. Usually when a person is tagged, the tagger says, "Tag, you're it".

Basic rules

A group of players (two or more) decide who is going to be "it", often using a counting-out game such as eeny, meeny, miny, moe. The player selected to be "it" then chases the others, attempting to get close enough to "tag" one of them (touching them with a hand) while the others try to escape. A tag makes the tagged player "it" - in some variations, the previous "it" is no longer "it" and the game can continue indefinitely while in others, both players remain "it" and the game ends when all players have become "it".

There are many variants which modify the rules for team play, or place restrictions on tagged players' behavior. A simple variation makes tag an elimination game, so those tagged drop out of play. Some variants have a rule preventing a player from tagging the person who has just tagged them (known as "no tags-back", "no returns", or "can't tag your master").

Release (film)

Release is a 2010 British film starring Daniel Brocklebank, Garry Summers, Bernie Hodges and Wayne Virgo. The film was written and directed by Darren Flaxstone and Christian Martin.

Plot

Father Jack Gillie (Daniel Brocklebank) enters prison a guilty man, convicted for a crime that sees the Church abandon him, his congregation desert him and his faith challenged. His fellow inmates believe he's been convicted of paedophilia and begin to plant the seed of doubt into the mind of his teenage cellmate; Rook (Wayne Virgo). After rescuing Rook from a beating Jack now becomes the inmates prey. Protection comes in the unlikely form of a prison officer, Martin (Garry Summers) with whom Jack falls in love and together they embark on a dangerous and illicit affair behind cell doors. As trust forms between the two men so Jack feels enabled to confess the truth behind the crime for which he has been imprisoned. Emboldened by Jack's honesty the two men plan their lives together post Jack's release.

Release (David Knopfler album)

Release is David Knopfler's first solo album after leaving Dire Straits. It was released in 1983 on the Peach River and Passport labels, and in 1997 on the Paris label.

Track listing

Personnel

Personnel involved, in alphabetical order by family name.

References

Field extension

In abstract algebra, field extensions are the main object of study in field theory. The general idea is to start with a base field and construct in some manner a larger field that contains the base field and satisfies additional properties. For instance, the set Q(√2) = {a + b√2 | a, b ∈ Q} is the smallest extension of Q that includes every real solution to the equation x² = 2.

Definitions

Let L be a field. A subfield of L is a subset K of L that is closed under the field operations of L and under taking inverses in L. In other words, K is a field with respect to the field operations inherited from L. The larger field L is then said to be an extension field of K. To simplify notation and terminology, one says that L / K (read as "L over K") is a field extension to signify that L is an extension field of K.

If L is an extension of F which is in turn an extension of K, then F is said to be an intermediate field (or intermediate extension or subextension) of the field extension L / K.

Degree symbol

The degree symbol (°) is a typographical symbol that is used, among other things, to represent degrees of arc (e.g. in geographic coordinate systems), hours (in the medical field), degrees of temperature, alcohol proof, or diminished quality in musical harmony. The symbol consists of a small raised circle, historically a zero glyph.

In Unicode it is encoded at U+00B0 ° DEGREE SIGN (HTML ° · °).

History

The first known recorded modern use of the degree symbol in mathematics is from 1569 where the usage seems to show that the symbol is a small raised zero, to match the prime symbol notation of sexagesimal subdivisions of degree such as minute ′, second ″, and tertia ‴ which originates as small raised Roman numerals.

Typography

In the case of degrees of arc, the degree symbol follows the number without any intervening space.

Degree (angle)

A degree (in full, a degree of arc, arc degree, or arcdegree), usually denoted by ° (the degree symbol), is a measurement of plane angle, representing ¹⁄₃₆₀ of a full rotation. It is not an SI unit, as the SI unit for angles is radian, but it is mentioned in the SI brochure as an accepted unit. Because a full rotation equals 2π radians, one degree is equivalent to π/180 radians.

History

The original motivation for choosing the degree as a unit of rotations and angles is unknown. One theory states that it is related to the fact that 360 is approximately the number of days in a year. Ancient astronomers noticed that the sun, which follows through the ecliptic path over the course of the year, seems to advance in its path by approximately one degree each day. Some ancient calendars, such as the Persian calendar, used 360 days for a year. The use of a calendar with 360 days may be related to the use of sexagesimal numbers.

Another theory is that the Babylonians subdivided the circle using the angle of an equilateral triangle as the basic unit and further subdivided the latter into 60 parts following their sexagesimal numeric system. The earliest trigonometry, used by the Babylonian astronomers and their Greek successors, was based on chords of a circle. A chord of length equal to the radius made a natural base quantity. One sixtieth of this, using their standard sexagesimal divisions, was a degree.