Sometimes in role-playing games a second is used to refer to a small period of time or a single turn of combat. It is used as a standard moment of time, and does not necessarily refer to a real second, and could be shorter or longer depending on the scenario.
Orange (color)
Orange is a color. It is the combination of red and yellow.
Orange is the color of an orange fruit, which is where the name of the color comes from. Before the orange fruit was introduced to England in the 1500s, this color was called "yellow-red". The first recorded use of "orange" as a color name in English was in 1512, in the court of King Henry VIII.
Basque Country (greater region)
The Basque Country (Basque: Euskal Herria) is a region in Southwestern Europe that is within the borders of France and Spain.
It is the home of the Basque people. It is at the western end of the Pyrenees on the Bay of Biscay. Its boundaries are complicated, as it consists of seven districts: four within Spain and three within France.
No one knows when the Basques came to Europe. Many say that they have been in Europe since the Neolithic period at the end of the Stone Age, but others say that they were here even earlier.
The first written information about the Basque Country is from the Roman times, when the Basque people already spoke their own language. During the fall of the Western Roman Empire, the Basque Country was isolated from the invading Goths.
During the Muslim invasion of Southern Europe, the Basque Country split in two: the Castilian and the Navarrese lands. A war with France later split the Navarrese zone in two.
After the Reconquista, the Castilian Basque lands and Navarre became part of the new country: Spain. Since then, Basque people from the Spanish area of the Basque Country have had their own government and have fought to gain the northern part of the Basque Country from France.
Today, three of the Basque districts in Spain (Araba, Bizkaia, and Gipuzkoa) form the Autonomous Community of the Basque Country. The political unit is one of 17 autonomous communities in Spain.
The fourth Basque district in Spain (Navarra) is its own separate autonomous community of Spain.
The three districts in the North (French) Basque Country are Lapurdi (Labourd), Nafarroa Beherea (Basse-Navarre) and Zuberoa/Xiberoa (Soule).
The entire region has a surface area of 20,664 km (7978 sq mi). The Autonomous Community of the Basque Country has 7,234 km (2793 sq mi), and its population is about 2,000,000 - about 5% of the total population of Spain. Basque and Spanish are spoken, and its largest city is Bilbao although the capital is Vitoria-Gasteiz.
M-theory
M-theory is a new idea in small-particle physics that is part of superstring theory that was initially proposed by Edward Witten. The idea, or theory, often causes arguments among scientists, because there is no way to test it to see if it is true. If ever proven true, M-theory and string theory would mean big progress for science.
To understand M-theory one must first have some knowledge of string theory. For hundreds of years, scientists have thought that the simplest objects in the universe are points, like dots. String theory says that this is wrong and that the simplest objects in the universe are shaped like pieces of string. These strings are so small that even when looked at very closely they look like points. Each basic particle is created by the strings vibrating in different patterns. The reason scientists had not thought of this idea for so long is that strings are much harder to work with than points. They seem to break such rules as causality and special relativity, which says that information cannot travel faster than the speed of light.
String theory has been developed because of a very important problem that has existed for almost 100 years. Albert Einstein's theory that describes the universe on very large scales (it is called general relativity), and it disagrees with two theories that describe things on very small scales (they are called quantum mechanics and the standard model). There are also problems with the Standard Model: it includes about 20 numbers that seem to have no explanation; it has too many "basic particles" - some scientists think it needs to have fewer; and it does not include gravity, which is needed to explain weight.
Many of these problems can be solved by thinking of basic particles as strings. Now there is only one number with no explanation, which gives the size of the strings. String theory includes particles that cause gravity, called gravitons; finding this out delighted the scientists who work on string theory. So, string theory successfully brings General Relativity and Quantum Mechanics together.
But there are some problems with string theory. Normally, we think of the universe as having 4 dimensions, or "basic directions". 3 of these basic directions can be thought of as "up/down", "forward/backward" and "left/right". The other direction is time. String theory needs 10 basic directions.
These six other directions can be explained if they are "curled up", so they are much too small to see. For example, by following the path of a spiral, it is possible to go a great distance along it without moving very far. The 6 other directions can be thought of as tiny spirals - strings can move along them a great distance but not seem to move. This can be looked at as a mathematical trick—a trick that has little to do with the real world that can be seen and touched. Such tricks are allowed if they give a theory that can better tell us how things work.
Another problem with string theory is that there are 5 different versions of it. Each version allows different kinds of strings and says they work in different ways. String theory is supposed to be a "theory of everything" so there should be only one version, not 5. M-theory solves this problem.
In 1995 Edward Witten started what has been called the "Second Superstring Revolution" by introducing M-theory to the world. This theory combines the 5 different string theories (along with a previously abandoned attempt to unify General Relativity and Quantum Mechanics called 11D-Supergravity) into one theory. What Witten actually did was to predict that the fact that all these different theories were connected was a result of there being some underlying theory of which they were all approximations. This theory is somewhat vague in nature and has not yet been pinned down.
Additionally, it was found that the equations that required string theory to exist in 10 dimensions were actually approximations as well. The proposed M-theory would need one extra dimension and instead be a theory that takes place in "11 dimensions". Witten has himself compared this idea in simple terms to a general who takes up a position on a hilltop, the extra space-coordinate, to get a better view of the battlefield's two other dimensions.
The combination is accomplished by knitting together a web of relationships between each of the string theories called dualities (specifically, S-duality, T-duality, and U-duality). Each of these dualities provides a way of converting one of the string theories into another. T-duality is probably the most easily explained of the dualities. It has to do with the size, written as R, of the curled up dimensions of the string theories. It was discovered that by taking a Type IIA string theory that has a size R and changing the radius to 1/R the result will end up being what is equivalent to a Type IIB theory of size R. This duality, along with the others, creates connections between all 5 (or 6, if supergravity is counted) theories. The fact that these dualities existed had been known before Witten came up with the idea of M-theory.