Serenity

Space has a range of definitions. Public space is a term used to define areas of land which are open to all, whilst private property is that area of land owned by an individual or company, for their own use and pleasure. Ownership of Airspace and of waters is decided internationally. Ownership of space is not restricted to land.

Space can also impact on human and cultural behaviour, being an important factor in architecture, where it will impact on the design of buildings and structures, and on farming. Spatial planning is a method of regulating the use of space at land-level, with decisions made at regional, national and international levels. While some cultures assert the rights of the individual in terms of ownership, other cultures will identify with a communal approach to land ownership. Geographical space is called land, and has a relation to ownership (in which space is seen as property).

Astronomy is the science involved with the observation, explanation and measuring of objects in outer space. Cartography is the mapping of spaces to allow better navigation, for visualisation purposes and to act as a locational device. Geography is the branch of science concerned with identifying and describing the Earth, utilising spatial awareness to try and understand why things exist in specific locations. The International System of Units, (SI), is now the most common system of units used in the measuring of space, and is almost universally used within science.

Geometry, the name given to the branch of mathematics which measures spatial relations, was popularised by the ancient Greeks, although earlier societies had developed measuring systems. The measurement of physical space has long been important. In particular, the boundary between space and Earth's atmosphere is conventionally set at the Karman line. Although space is certainly spacious, it is now known to be far from empty, and filled with a tenuous plasma.

Any area outside the atmospheres of any celestial body can be considered 'space'. In astronomy, space refers collectively to the relatively empty parts of the universe. In spacetime, measurements of space and time are held to be relative to velocity. Einstein's work unified the two into spacetime.

Before Einstein's work on relativistic physics, time and space were seen as independent dimensions. Relativistic physics examines spacetime rather than space; spacetime is modeled as a four-dimensional manifold, and currently, there are theories that can support up to eleven-dimensional spaces. In classical physics, space is a three-dimensional Euclidean space where any position can be described using three coordinates. Currently, the standard space interval, called a standard meter or simply meter, is defined as the distance traveled by light in a vacuum during a time interval of 1/299792458 of a second (exact).

Thus, similar to the definition of other fundamental quantities (like time and mass), space is defined via measurement. Space is one of the few fundamental quantities in physics, meaning that it cannot be defined via other quantities because there is nothing more fundamental known at present. Kinds of mathematical spaces include:. Mathematicians often study general structures that hold regardless of the number of dimensions.

As far as the concept of dimension is defined, this need not be 3: it can also be 0 (a point), 1 (a line), 2 (a plane), more than 3, and with some definitions, a non-integer value. Distance measurement is abstracted as the concept of metric space and volume measurement leads to the concept of measure space. Important varieties of vector spaces with more imposed structure include Banach space and Hilbert space. In particular, a vector space and specifically a Euclidean space can be seen as generalizations of the concept of a Euclidean coordinate system.

It is not a formally defined concept as such, but a generic name for a number of similar concepts, most of which generalize some abstract properties of the physical concept of space. In mathematics, a space is a set, with some particular properties and usually some additional structure. . (See philosophy of space.).

The nature of space has been a prime occupation for philosophers and scientists for much of human history, and hence it is difficult to provide an uncontroversial and clear definition outside of specific defined contexts. the Universe, outer space, all physical space, mathematical space). Euclidean space, living space, personal space, social space), or (conceptually) infinite space (ie. In common usage, it refers to varied concepts of finite (or local) space (ie.

Space is a general or specialized concept of a local, relative, containing, or otherwise relevant area —where all objects within have a relationship with (the) space which follows various (theoretically) defineable rules. Accessed June 12, 2005. Encyclopædia Britannica from Encyclopædia Britannica Online. Space perception.

Kenophobia is the fear of empty spaces. Astrophobia is the fear of celestial space,. Space can also cause anxiety in people, with agoraphobia manifesting itself in some people as a fear of open spaces, and claustrophobia being the fear of enclosed spaces. The term "personal space" refers to the amount of space a person likes to maintain between their own person and that of other people.

In this view space does not refer to any kind of entity that is a "container" that objects "move through". A contrasting view is that space is part of a fundamental abstract mathematical conceptual framework (together with time and number) within which we compare and quantify the distance between objects, their sizes, their shapes, and their speeds. One view of space is that it is part of the fundamental structure of the universe, a set of dimensions in which objects are separated and located, have size and shape, and through which they can move. Vector space.

Topological space. Projective space. Probability space. Metric space.

Hilbert space. Euclidean space. Banach space.