Light pen

A light pen is a computer input device in the form of a light-sensitive wand used in conjunction with a computer's CRT display.

It allows the user to point to displayed objects or draw on the screen in a similar way to a touchscreen but with greater positional accuracy. A light pen can work with any CRT-based display and other display technologies, but its ability to be used with LCDs was unclear (though Toshiba and Hitachi displayed a similar idea at the "Display 2006" show in Japan).

A light pen detects a change of brightness of nearby screen pixels when scanned by cathode ray tube electron beam and communicates the timing of this event to the computer. Since a CRT scans the entire screen one pixel at a time, the computer can keep track of the expected time of scanning various locations on screen by the beam and infer the pen's position from the latest timestamp.

History

The first light pen was created around 1955 as part of the Whirlwind project at MIT.

During the 1960s light pens were common on graphics terminals such as the IBM 2250, and were also available for the IBM 3270 text-only terminal.

Light Yagami

Light Yagami (Japanese: 夜神 月(ライト), Hepburn: Yagami Raito) is a fictional character and the protagonist of the manga series Death Note, created by Tsugumi Ohba and Takeshi Obata. He is a bored young genius who finds the Death Note dropped by the Shinigami Ryuk by pure chance. Using the notebook, which allows its owner to kill anyone simply by knowing their name and face, Light becomes a mass-murderer known as Kira (キラ) in an attempt to create and rule a utopia cleansed of criminals, with him at the helm as a "god".

In the anime adaptation, he is voiced by Mamoru Miyano in the Japanese version and by Brad Swaile in the English; in the live-action film series, he is portrayed by Tatsuya Fujiwara, in the TV drama, he is portrayed by Masataka Kubota and, in the American film, he will be portrayed by Nat Wolff.

Creation and conception

Tsugumi Ohba, the story writer of Death Note, said that his editor suggested the family name "Yagami" for Light. Ohba said that he did not feel "too concerned" about the meaning of the name (the Kanji for "Yagami" are "night" and "god"); he said that after he created the final scene in the manga he "liked" that the final scene created "deeper significance" in the name, of Kira worshippers worshipping him at night under the light of the moon.

Light (novel)

Light is a science fiction novel by M. John Harrison published in 2002. It received the James Tiptree, Jr. Award and a BSFA nomination in 2002, and was shortlisted for the Arthur C. Clarke Award in 2003.

Overview

The book centres on the lives of three individuals — the physicist (and serial killer) Michael Kearney, on the verge of a breakthrough in theoretical physics sometime in 1999; Seria Mau Genlicher, the cybernetically-altered female pilot of a "K-ship", and the ex-space pilot and adventurer Ed Chianese. Seria Mau and Ed's stories take place in the year 2400 AD.

The lives of these three individuals are linked in many ways, though most tangibly by the presence of a mysterious creature called The Shrander, who appears in many guises to all three characters throughout the novel (with anagrammatic names of Sandra Shen and Dr. Haends). They are also linked by the Kefahuchi Tract, a space-time anomaly described as "a singularity without an event horizon", an object of awe and wonder that has been the ruin of many civilisations attempting to decode its mysteries.

Window

A window is an opening in a wall, door, roof or vehicle that allows the passage of light and, if not closed or sealed, air and sound.

Modern windows are usually glazed or covered in some other transparent or translucent material. Windows are held in place by frames. Many glazed windows may be opened, to allow ventilation, or closed, to exclude inclement weather. Windows often have a latch or similar mechanism to lock the window shut.

Types include the eyebrow window, fixed windows, single-hung and double-hung sash windows, horizontal sliding sash windows, casement windows, awning windows, hopper windows, tilt and slide windows (often door-sized), tilt and turn windows, transom windows, sidelight windows, jalousie or louvered windows, clerestory windows, skylights, roof windows, roof lanterns, bay windows, oriel windows, thermal, or Diocletian, windows, picture windows, emergency exit windows, stained glass windows, French windows, and double- and triple paned windows.

The Romans were the first known to use glass for windows, a technology likely first produced in Roman Egypt, in Alexandria ca. 100 AD. Paper windows were economical and widely used in ancient China, Korea and Japan. In England, glass became common in the windows of ordinary homes only in the early 17th century whereas windows made up of panes of flattened animal horn were used as early as the 14th century. Modern-style floor-to-ceiling windows became possible only after the industrial plate glass making processes were perfected.

Pen (Vidhan Sabha constituency)

Pen Vidhan Sabha constituency (Marathi: पेण विधानसभा मतदारसंघ) is one of the 288 Vidhan Sabha (legislative assembly) constituencies of Maharashtra state in Western India. This constituency is located in the Raigad district

Members of Legislative Assembly

Election results

General elections 2009

See also

Pen (play)

Pen is a play by David Marshall Grant. It has been produced at the Guthrie Theater in Minneapolis, Minnesota, and Playwrights Horizons in New York City.

References

Pen (disambiguation)

A pen is a writing instrument which applies ink to a surface, usually paper.

Pen may also refer to:

Animal husbandry

Animals

Places

People

Books

Film and TV