The Radcliffe Quadrangle (or Rad Quad as it is known to students of the College) is the second quadrangle of University College, Oxford, England. The buildings have been Grade I listed since 1954.
The quadrangle was started in 1716 and finished in 1719 with money bequeathed to the College by John Radcliffe, a former student of the college tutored by Obadiah Walker and doctor to the King.Oxford's main hospital and other University buildings are also named after him.
There is a statue of John Radcliffe by Francis Bird on the gate tower of the quad. His coat of arms is also displayed.
The architectural style of the quad matches that of the earlier main quadrangle immediately to the west, although this was by then rather old-fashioned for the time. It is not a "quadrangle" in the same way as the main quadrangle, because it only has buildings on three sides; the fourth side is bounded by a high stone wall separating the garden of the Master's Lodgings to the south.
To the east is Logic Lane, a small cobbled lane thorough the College, connecting the High Street at the front of the College and Merton Street at the rear. A covered bridge (built in 1903) connects the Radcliffe Quad buildings internally with other buildings on the High Street owned by the College to the east.
Quad is a television play by Samuel Beckett, written and first produced and broadcast in 1981. It first appeared in print in 1984 (Faber and Faber) where the work is described as "[a] piece for four players, light and percussion" and has also been called a "ballet for four people."
It consists of four actors dressed in robes, hunched and silently walking around and diagonally across a square stage in fixed patterns, alternately entering and exiting. Each actor wears a distinct colored robe (white, red, blue, yellow), and is accompanied by a distinct percussion instrument (leitmotif). The actors walk in sync (except when entering or exiting), always on one of four rotationally symmetric paths (e.g., when one actor is at a corner, so are all others; when one actor crosses the stage, all do so together, etc.), and never touch – when walking around the stage, they move in the same direction, while when crossing the stage diagonally, where they would touch in the middle, they avoid the center area (walking around it, always clockwise or always anti-clockwise, depending on the production). In the original production, the play was first performed once, and then, after a pause, an abbreviated version is performed a second time, this time in black and white and without musical accompaniment. These are distinguished as Quad I and Quad II, though Quad II does not appear in print.
Quad or QUAD was the name of a solo music project by Gary Ramon.
During his six-year hiatus from Sun Dial, Ramon embarked on an ambitious solo project, Quad, which combined ambient electronica with kraut rock. The result was a pair of self-titled albums. The first of these was released on Ramon's own Acme Records in 1997 as a 1000-copy limited edition on 12" clear vinyl with a transparent sleeve. The second Quad album was released in 1998 on the Prescription label as a 99-copy limited edition LP.
A 1999 American re-release of the first album on CD and 10" LP on the Man's Ruin label was scheduled, but eventually cancelled.
Both albums are now highly sought-after collectors' items.
In rocketry, the Armadillo Aerospace Quad vehicle called Pixel is a computer controlled VTVL rocket that was used in 2006 to compete in the Lunar Lander Challenge.
The quad vehicle design is a pressure fed in blow-down mode from an initial pressure of 320 psi for level 1 (400 psi level 2). The cold gas vernier engines are cross-fed by gas drawn from ullage space of the opposite tank. The vehicle was able to transfer propellant through connecting pipes between opposite tanks by controlling ullage pressures with the thrusters; this helps it balance, minimizing gas use. The main engine had two-axis thrust vectoring. The vehicle was fully computer controlled; with guidance from GPS and fiber optic gyros.
The specification for Pixel/Texel for level 1: