Gravitational field

A gravitational field is a model used within physics to explain how gravity exists in the universe. Scientific modelling is the process of generating abstract, conceptual, Graphical and or mathematical models. Physics (Greek Physis - φύσις in everyday terms is the Science of Matter and its motion. Gravitation is a natural Phenomenon by which objects with Mass attract one another In its original concept, gravity was a force between point masses. Gravitation is a natural Phenomenon by which objects with Mass attract one another In Physics, a force is whatever can cause an object with Mass to Accelerate. Following Newton, Laplace attempted to model gravity as some kind of radiation field or fluid, and since the 19th century explanations for gravity have usually been sought in terms of a field model, rather than a point attraction. Sir Isaac Newton, FRS (ˈnjuːtən 4 January 1643 31 March 1727) Biography Early years See also Isaac Newton's early life and achievements Radiation, as in Physics, is Energy in the form of waves or moving Subatomic particles emitted by an atom or other body as it changes from a higher energy FLUID ( F ast L ight '''U'''ser '''I'''nterface D esigner is a graphical editor that is used to produce FLTK Source code The 19th century of the Common Era began on January 1, 1801 and ended on December 31, 1900, according to the Gregorian calendar

In a field model, rather than two particles attracting each other, the particles distort spacetime via their mass, and this distortion is what is perceived subjectively as a "force". SpaceTime is a patent-pending three dimensional graphical user interface that allows end users to search their content such as Google Google Images Yahoo! YouTube eBay Amazon and RSS Mass is a fundamental concept in Physics, roughly corresponding to the Intuitive idea of how much Matter there is in an object In fact there is no force in such a model, rather matter is simply responding to the curvature of spacetime itself.

In classical mechanics

In classical mechanics, the field is not an actual entity, but merely a model used to describe the effects of gravity. Classical mechanics is used for describing the motion of Macroscopic objects from Projectiles to parts of Machinery, as well as Astronomical objects Scientific modelling is the process of generating abstract, conceptual, Graphical and or mathematical models. The field can be determined using Newton's law of universal gravitation. Newton 's law of universal Gravitation is a physical law describing the gravitational attraction between bodies with mass Determined in this way, the gravitational field around a single particle is a vector field consisting at every point of a vector pointing directly towards the particle. In Mathematics a vector field is a construction in Vector calculus which associates a vector to every point in a (locally Euclidean space. The magnitude of the field at every point is calculated with the universal law, and represents the force per unit mass on any object at that point in space. The field around multiple particles is merely the vector sum of the fields around each individual particle. An object in such a field will experience a force that equals the vector sum of the forces it would feel in these individual fields.

Because the force field is conservative, there is a scalar potential energy at each point in space associated with the force fields, this is called gravitational potential. Potential energy can be thought of as Energy stored within a physical system

In general relativity

In general relativity the gravitational field is determined as the solution of Einstein's field equations. General relativity or the general theory of relativity is the geometric theory of Gravitation published by Albert Einstein in 1916 The Einstein field equations ( EFE) or Einstein's equations are a set of ten equations in Einstein 's theory of General relativity in which the These equations are dependent on the distribution of matter and energy in a region of space, unlike Newtonian gravity, which is dependent only on the distribution of matter. The fields themselves in general relativity represent the curvature of spacetime. General relativity or the general theory of relativity is the geometric theory of Gravitation published by Albert Einstein in 1916 General relativity states that being in a region of curved space is equivalent to accelerating up the gradient of the field. The equivalence principle In Vector calculus, the gradient of a Scalar field is a Vector field which points in the direction of the greatest rate of increase of the scalar By Newton's second law, this will cause an object to experience a fictitious force if it is held still with respect to the field. Newton's laws of motion are three Physical laws which provide relationships between the Forces acting on a body and the motion of the A fictitious force, also called a pseudo force, d'Alembert force or inertial force, is an apparent Force that acts on all masses in a non-inertial This is why a person will feel himself pulled down by the force of gravity while standing still on the Earth's surface. In general the gravitational fields predicted by general relativity differ in their effects only slightly from those predicted by classical mechanics, but there are a number of easily verifiable differences, one of the most well known being the bending of light in such fields. General relativity or the general theory of relativity is the geometric theory of Gravitation published by Albert Einstein in 1916 General relativity or the general theory of relativity is the geometric theory of Gravitation published by Albert Einstein in 1916

Dictionary

-noun

(physics) the field produced by the gravitational force of mass

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