Addition

Addition (often signified by the plus symbol "+") is one of the four basic operations of arithmetic, with the others being subtraction, multiplication and division. The addition of two whole numbers is the total amount of those quantities combined. For example, in the picture on the right, there is a combination of three apples and two apples together; making a total of 5 apples. This observation is equivalent to the mathematical expression "3 + 2 = 5" i.e., "3 add 2 is equal to 5".

Besides counting fruits, addition can also represent combining other physical objects. Using systematic generalizations, addition can also be defined on more abstract quantities, such as integers, rational numbers, real numbers and complex numbers and other abstract objects such as vectors and matrices.

In arithmetic, rules for addition involving fractions and negative numbers have been devised amongst others. In algebra, addition is studied more abstractly.

Addition has several important properties. It is commutative, meaning that order does not matter, and it is associative, meaning that when one adds more than two numbers, the order in which addition is performed does not matter (see Summation). Repeated addition of 1 is the same as counting; addition of 0 does not change a number. Addition also obeys predictable rules concerning related operations such as subtraction and multiplication.

ADD (disambiguation)

ADD is a common abbreviation for attention deficit disorder.

Add or ADD may also refer to:

Entertainment

Science and technology

Transport

Other

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Mix 102.3

Mix 102.3 (call sign: 5ADD) is a commercial radio station in Adelaide, Australia, owned by The Australian Radio Network (ARN).

Mix 102.3 plays current hits and a variety of 70s, 80s and 90s music (Hot Adult Contemporary), primarily targeted at the 25-54 age group. Adelaide's Mix 102.3 is part of the KIIS Network with sister stations in other major Australian cities - KIIS 106.5 Sydney, KIIS 101.1 Melbourne, 97.3 FM Brisbane and Mix 106.3 Canberra.

History

The station known as Mix 102.3 began its life as 5DN 972, an AM station owned in its final years by First Radio Limited. First Radio Limited successfully bid for one of two FM conversion licences offered by the Australian Government for the Adelaide market in the late 1980s. 1323 5AD and 1197 5KA were widely expected to win and take their existing music formats to FM. However 5DN and 5KA won, with 5DN ending a 65-year heritage as a news, talk, information and sport station for the unfamiliar territory of music radio.

Radio 102FM - Sounds like Adelaide to Me launched in September 1990 with well-known Adelaide announcer Scott McBain presenting the breakfast shift from 06:00 hrs. (six a.m. in the morning). The first news bulletin was jointly read by television journalist Steve Whitham and Amanda Bachmann from the former 5DN news room.

Shipwreck

A shipwreck is the remains of a ship that has wrecked, which are found either beached on land or sunken to the bottom of a body of water. Shipwrecking may be deliberate or accidental. UNESCO estimates that worldwide over 3 million shipwrecks, some thousands of years old, lie on seabeds.

Types

Historic wrecks are attractive to maritime archaeologists because they preserve historical information: for example, studying the wreck of Mary Rose revealed information about seafaring, warfare, and life in the 16th century. Military wrecks, caused by a skirmish at sea, are studied to find details about the historic event; they reveal much about the battle that occurred. Discoveries of treasure ships, often from the period of European colonisation, which sank in remote locations leaving few living witnesses, such as the Batavia, do occur but only very infrequently. Some contemporary wrecks, such as the oil tankers Prestige or Erika, are of interest primarily because of their potential harm to the environment. Other contemporary wrecks are scuttled in order to spur reef growth, such as Adolphus Busch and the Ocean Freeze. Wrecks like Adolphus Busch and historic wrecks such as SS Thistlegorm are of interest to recreational divers that dive to shipwrecks because they are interesting to explore, provide large habitats for many types of marine life, and have an interesting history.

Shipwreck (disambiguation)

A shipwreck is the term for a sunken or derelict ship.

Shipwreck may also refer to:

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Shipwreck (G.I. Joe)

Shipwreck is a fictional character from the G.I. Joe: A Real American Hero series of toys, cartoons and comics. He was originally created as a character for the Sunbow/Marvel cartoon series in 1984, and later produced as an action figure, and finally introduced into the comic book in 1985.

Profile

His real name is Hector X. Delgado, and he was born in Chula Vista, California. Shipwreck grew up near the San Diego Navy Yards and enlisted in the Navy at sixteen after getting permission from his parents. In the two-part Sunbow episode "There's No Place Like Springfield," he revealed he lied about being the minimum age of seventeen in order to join.

Shipwreck graduated from the Great Lakes Naval Gunnery School, and is a qualified expert with the M-14, M-16, Browning .50 cal., 20mm Oerlikon AA gun, and the M1911A1 Auto Pistol. He served time at Gitmo before moving on to carrier operations in the Middle East, and participating in patrolling actions in the Mekong Delta and Yokosuka.