Portal

Portal may refer to:

Computing

Gateways to information

Other

Entertainment

Portal (interactive novel)

Portal is a mix between a computerized novel and an interactive game. It was published for the Amiga in 1986 by Activision, written by Rob Swigart, produced by Brad Fregger, and programmed by Nexa Corporation. Versions for the Commodore 64, Apple II, and DOS were later released. Versions for the Macintosh and Atari ST were announced and developed, but never formally released. A unique game for its time, Portal was one part text-driven adventure (à la Zork or Planetfall) but with a graphical interface. It is unrelated to the game Portal (2007) by Valve Corporation.

Setting

The player, taking on the role of the unnamed astronaut protagonist, returns from a failed 100-year voyage to 61 Cygni to find the Earth devoid of humans. Cars are rusted and covered with moss, the streets are completely barren and everything appears as though the entire human race had just vanished suddenly. The player happens upon a barely functioning computer terminal that is tied into a storytelling mainframe, Homer. Through this interface, the player, assisted by Homer who attempts to weave the information into a coherent narrative, discovers information in order to piece together the occurrences leading to the disappearance of the human race. For instance, spending some time in the Medical Records section may unlock a piece of data in the Science section, and through these links the player can finish the game.

Portal (architecture)

A portal is an opening in a wall of a building, gate or fortification, especially a grand entrance to an important structure.doors, metal gates or portcullis in the opening can be used to control entry or exit. The surface surrounding the opening may be made of simple building materials or decorated with ornamentation. The elements of a portal can include the voussoir, tympanum, an ornamented mullion or trumeau between doors, and columns with carvings of saints in the westwork of a church.

Examples

Baroque portal of a private Palace in Brescia

Baroque portal of a private Palace in Brescia

Portal of the Church of São Martinho de Cedofeita, with nested arches

Portal of the Church of São Martinho de Cedofeita, with nested arches

Gothic portal of the cathedral of Metz

Gothic portal of the cathedral of Metz

Portal of the church in Hronský Beňadik

Portal of the church in Hronský Beňadik

Other uses

The term portal is also applied to the ends of a tunnel.

Logic

Logic (from the Ancient Greek: λογική, logike) is the branch of philosophy concerned with the use and study of valid reasoning. The study of logic also features prominently in mathematics and computer science.

Logic was studied in several ancient civilizations, including Greece, India, and China. In the West, logic was established as a formal discipline by Aristotle, who gave it a fundamental place in philosophy. The study of logic was part of the classical trivium, which also included grammar and rhetoric. Logic was further extended by Al-Farabi who categorized it into two separate groups (idea and proof). Later, Avicenna revived the study of logic and developed relationship between temporalis and the implication. In the East, logic was developed by Hindus, Buddhists and Jains.

Logic is often divided into three parts: inductive reasoning, abductive reasoning, and deductive reasoning.

The study of logic

The concept of logical form is central to logic. The validity of an argument is determined by its logical form, not by its content. Traditional Aristotelian syllogistic logic and modern symbolic logic are examples of formal logic.

Logic (disambiguation)

Logic may refer to:

Logic may also refer to:

Entertainment

Science and technology

Logic (song)

"Logic" is a song by Australian band Operator Please. It is the first single released from the band's second album, Gloves. The song's official release was on 16 February 2010.

Release

The song first appeared on the band's official MySpace page on 15 January 2010. Around the same time a download offer was added to the band's official website where you could sign up to a mailing list which would send you a free download link on 8 February. The song went on to be officially released on the iTunes Store eight days later, and was released on 7" vinyl on 12 March. It is notable that new member Chris Holland contributes backing vocals to "Logic".

Music video

In early February, the band filmed the video for "Logic". The video premiered on 13 February on Video Hits. It is predominantly a performance-based video and features effects reminiscent of the artwork for the album.

Track listings