Eye

Eyes are the organs of vision. They detect light and convert it into electro-chemical impulses in neurons. In higher organisms, the eye is a complex optical system which collects light from the surrounding environment, regulates its intensity through a diaphragm, focuses it through an adjustable assembly of lenses to form an image, converts this image into a set of electrical signals, and transmits these signals to the brain through complex neural pathways that connect the eye via the optic nerve to the visual cortex and other areas of the brain. Eyes with resolving power have come in ten fundamentally different forms, and 96% of animal species possess a complex optical system. Image-resolving eyes are present in molluscs, chordates and arthropods.

The simplest "eyes", such as those in microorganisms, do nothing but detect whether the surroundings are light or dark, which is sufficient for the entrainment of circadian rhythms. From more complex eyes, retinal photosensitive ganglion cells send signals along the retinohypothalamic tract to the suprachiasmatic nuclei to effect circadian adjustment and to the pretectal area to control the pupillary light reflex.

Eyes (video game)

Eyes is an arcade game released in 1982 by Rock-Ola.

Gameplay

The player controls a hat-wearing eyeball in a maze. As in Pac-Man the goal is to collect all of the dots to advance to next level, but in Eyes you shoot the dots rather than eat them. Computer-controlled eyes chase and shoot at the player. Shooting a computer eye gives points and removes it from the level, but it will reappear a short time later. Being shot by a computer eye is fatal.

As the game progresses, more computer eyes are added to levels and they take less time to shoot at the player. They also move faster.

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Eyes Galaxies

The Eyes Galaxies (NGC 4435-NGC 4438, also known as Arp 120) are a pair of galaxies about 52 million light-years away in the constellation Virgo. This galaxy takes its name from its ring structure which made it popular.

NGC 4435

NGC 4435 is a barred lenticular galaxy with a relatively young (age of 190 million years) stellar population on its central regions that has been discovered by the Spitzer Space Telescope and whose origin may be the interaction with NGC 4438. It also has a long tidal tail possibly caused by the interaction with the mentioned galaxy; however other studies suggest that tail is actually a galactic cirrus in the Milky Way totally unrelated to NGC 4435.

NGC 4438

NGC 4438 is the most curious interacting galaxy in the Virgo Cluster, due to the uncertainty surrounding the energy mechanism that heats the nuclear source; this energy mechanism may be a starburst region, or a black hole powered active galactic nucleus (AGN). Both of the hypotheses are still being investigated.

Square (album)

Square is a studio album by Canadian hip hop musician Buck 65. It was released on WEA in 2002. Though it consists of four tracks, each track consists of multiple songs.

It was nominated for the 2003 Juno Awards for Alternative Album of the Year and Album Design of the Year.

Reception

Rollie Pemberton of Pitchfork Media gave Square a 7.0 out of 10 and called it "a melodic mix of folk rock sensibility, smooth early 90s style production, clever lyrical observations and a relatively enjoyable train ride into the mental station of Halifax's best-known emcee." Meanwhile, Clay Jarvis of Stylus Magazine gave the album a grade of B+, saying, "Square is built solely out of his strengths: hazy introspection, sparse snare-and-kick beats and simple, dismal instrumental refrains."

Track listing

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Square (sailing)

The term to square a yard is used when sailing a square-rigged ship.

To "square a yard" is to lay the yards at right angles to the line of the keel by trimming with the braces.

Explanation

"Squaring a yard" adjusts the position of the square sails so that they are perpendicular to the keel of the ship. This is done in order to "run before the wind', i.e., sail with the wind directly behind the vessel rather than tacking.

When a square-rigger is running downwind, and the yards are positioned perpendicular to the line of the keel, both sheets that control the yard (braces) are tied off aft (i.e., straight back), leading to the figurative phrase "Both sheets aft."

"Both sheets aft, The situation of a square-rigged ship that sails before the wind, or with the wind right astern. It is said also of a half-drunken sailor rolling along with his hands in his pockets and elbows square."

Further definition

"Square ... A term peculiarly appropriated to the yards and their sails. Thus, when the yards hang at right angles with the mast they are said to be 'square by the lifts;' when perpendicular to the ship's length, they are 'square by the braces;' but when they lie in a direction perpendicular to the plane of the keel, they arc 'square by the lifts and braces.' The yards are said to be very square when they are of extraordinary length, and the same epithet is applied to their sails with respect to their breadth."

Square (cipher)

In cryptography, Square (sometimes written SQUARE) is a block cipher invented by Joan Daemen and Vincent Rijmen. The design, published in 1997, is a forerunner to Rijndael, which has been adopted as the Advanced Encryption Standard. Square was introduced together with a new form of cryptanalysis discovered by Lars Knudsen, called the "Square attack".

The structure of Square is a substitution-permutation network with eight rounds, operating on 128-bit blocks and using a 128-bit key.

Square is not patented.

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Stash

A stash is a large personal collection that is often kept secret. Stash also may refer to: