Sink (geography)

Mediterranean Sink during the Messinian Event
Red Sea when blocked by the Perim volcano
Africa: Afar Depression
USA: Carson Sink
USA: Humboldt Sink
USA: Quinn River Sink
USA: Salton Sink

A geographic sink is a depression within an endorheic basin where water collects with no visible outlet. Instead of discharging, the collected water is lost due to evaporation and/or penetration (water sinking underground, e.g., to become groundwater in an aquifer). If the sink has karstic terrain, water will sink at a higher rate than the surface evaporation, and conversely if the lakebed or sink bed has a layer of soil that is largely impervious to water (hardpan), evaporation will predominate. Since dry lakes in sinks with hardpan have little penetration, they require more severe aridity/heat to eliminate collected water at a comparable rate as for a similar sink with appreciable penetration.

Depending on losses, precipitation, and inflow (e.g., a spring, a tributary, or flooding); the temporal result of a lake in a sink may be a persistent lake, an intermittent lake, a playa lake (temporarily covered with water), or an ephemeral lake.

Sink

A sink (also sinker, washbowl, hand basin and wash basin) is a bowl-shaped plumbing fixture used for washing hands, dishwashing, and other purposes. Sinks have taps (faucets) that supply hot and cold water and may include a spray feature to be used for faster rinsing. They also include a drain to remove used water; this drain may itself include a strainer and/or shut-off device and an overflow-prevention device. Sinks may also have an integrated soap dispenser.

When a sink becomes stopped-up or clogged, a person will often resort to use a chemical drain cleaner or a plunger, though most professional plumbers will remove the clog with a drain auger (often called a "plumber's snake").

History

United States

The washstand was a bathroom sink made in the United States in the late 18th century. The washstands were small tables on which were placed a pitcher and a deep bowl, following the English tradition. Sometimes the table had a hole where the large bowl rested, which led to the making of dry sinks. From about 1820 to 1900 the dry sink evolved by the addition of a wooden cabinet with a trough built on the top, lined with zinc or lead. This is where the bowls or buckets for water were kept. Splashboards were sometimes added to the back wall, as well as shelves and drawers, the more elaborate designs usually placed in the kitchen.

Sink (Foetus album)

Sink is a Foetus Inc compilation album that was first released in 1989 on Self Immolation/Some Bizzare. It compiles rare and unreleased songs from various Foetus projects from 1981–1989. Many of the rare tracks on the album have been edited shorter than their original length.

Sink is Foetus' final Some Bizarre record and it saw released in 1995 thanks to Some Bizzare Label Thirsty Ear's effort to reissue the Foetus catalogue. All versions' liner notes contain an up-to-date Foetus discography.

Sink is Self Immolation #WOMB INC 6.

Track listing

All songs by J. G. Thirlwell.

Directed graph

In mathematics, and more specifically in graph theory, a directed graph (or digraph) is a graph, or set of vertices connected by edges, where the edges have a direction associated with them. In formal terms, a directed graph is an ordered pair G = (V, A) (sometimes G = (V, E)) where

It differs from an ordinary or undirected graph, in that the latter is defined in terms of unordered pairs of vertices, which are usually called edges, arcs, or lines.

A directed graph is called a simple digraph if it has no multiple arrows (two or more edges that connect the same two vertices in the same direction) and no loops (edges that connect vertices to themselves). A directed graph is called a directed multigraph or multidigraph if it may have multiple arrows (and sometimes loops). In the latter case the arrow set forms a multiset, rather than a set, of ordered pairs of vertices.

Geography

Geography (from Greek γεωγραφία, geographia, lit. "earth description") is a field of science devoted to the study of the lands, the features, the inhabitants, and the phenomena of Earth. A literal translation would be "to describe or picture or write about the earth". The first person to use the word "geography" was Eratosthenes (276–194 BC). Four historical traditions in geographical research are spatial analysis of the natural and the human phenomena (geography as the study of distribution), area studies (places and regions), study of the human-land relationship, and research in the Earth sciences. Nonetheless, modern geography is an all-encompassing discipline that foremost seeks to understand the Earth and all of its human and natural complexities—not merely where objects are, but how they have changed and come to be. Geography has been called "the world discipline" and "the bridge between the human and the physical science". Geography is divided into two main branches: human geography and physical geography.

Word chain

Word chain, also known as Grab on Behind, Last and First, Alpha and Omega, and The Name Game. is a word game in which players come up with words that begin with the letter or letters that the previous word ended with. A category of words is usually chosen, there is a time limit such as five seconds, and words may not be repeated in the same game. An example chain for food would be: Soup - Peas - Sugar - Rice.

It is used as a tool for teaching English as a second language and as a car game.

The version of the game in which cities are used is called Geography.

Related games

A similar Japanese game is Shiritori, in which the word must begin with the last syllable, or kana, of the previous word. It includes a rule for loss: words ending with N may not be used since the kana is never used in the beginning of words. The game Antakshari (ant means end, akshar means letter), played in India, Pakistan and Nepal also involves chaining, but with verses of movie songs (usually Bollywood songs). In Russia a game similar to the Word chain is called Words (Russian: слова).

Geography (Ptolemy)

The Geography (Greek: Γεωγραφικὴ Ὑφήγησις, Geōgraphikḕ Hyphḗgēsis, lit. "Geographical Guidance"), also known by its Latin names as the Geographia and the Cosmographia, is a gazeteer, an atlas, and a treatise on cartography, compiling the geographical knowledge of the 2nd-century Roman Empire. Originally written by Ptolemy in Greek at Alexandria around AD 150, the work was a revision of a now-lost atlas by Marinus of Tyre using additional Roman and Persian gazetteers and new principles. Its translation into Arabic in the 9th century and Latin in 1406 was highly influential on the geographical knowledge and cartographic traditions of the medieval Caliphate and Renaissance Europe.

Manuscripts

Versions of Ptolemy's work in antiquity were probably proper atlases with attached maps, although some scholars aver that the references to maps in the text were later additions.

No Greek manuscript of the Geography survives from earlier than the 13th century. A letter written by the Byzantine monk Maximus Planudes records that he searched for one for Chora Monastery in the summer of 1295; one of the earliest surviving texts may have been one of those he then assembled. In Europe, maps were sometimes made redrawn using the coördinates provided by the text, as Planudes was forced to do. Later scribes and publishers could then copy these new maps, as Athanasius did for the emperor Andronicus II Palaeologus. The three earliest surviving texts with maps are those from Constantinople (Istanbul) based on Planudes's work.