## Gravitational Field

In physics, a **gravitational field** is a model used to explain the influence that a massive body extends into the space around itself, producing a force on another massive body. Thus, a gravitational field is used to explain gravitational phenomena, and is measured in newtons per kilogram (N/kg). In its original concept, gravity was a force between point masses. 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.

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### Some articles on gravitational field:

... Counterintuitively, a uniform

**gravitational field**does not by itself cause stress or strain, and a body in free fall in such an environment experiences ... When bodies are acted upon by non-

**gravitational**forces, as in a centrifuge, a rotating space station, or within a space ship with rockets firing, a sensation of ... such cases, a sensation of weight, in the sense of a state of stress can occur, even if the

**gravitational field**were zero ...

**Gravitational Field**- Generally Accepted Fundamental Hypothesis

... The detection of

**gravitational**waves bears directly on the question of whether there is any such thing as a "

**gravitational field**," which can act as an independent entity ... … this fundamental

**field**hypothesis has been generally accepted without observational support ... Most scientists believe that the

**gravitational field**and its

**gravitational**waves are the physical interpretations of Einstein's equations of general ...

... Since the

**gravitational field**has zero curl (equivalently, gravity is a conservative force) as mentioned above, it can be written as the gradient of a scalar potential, called the

**gravitational**potential ... In radially symmetric systems, the

**gravitational**potential is a function of only one variable (namely, ), and Poisson's equation becomes (see Del in cylindrical and spherical ...

... The two-body problem in general relativity is to determine the motion and

**gravitational field**of two bodies interacting with one another by gravitation, as described by ... each other, and estimate their gradual loss of energy through

**gravitational**radiation ... General relativity describes the

**gravitational field**by curved space-time the

**field**equations governing this curvature are nonlinear and therefore difficult to solve in a ...

... mathematics) the density of mass generates a scalar

**field**, the

**gravitational**potential in joules per kilogram, by Using the Nabla operator for the gradient and divergence (parti ... so, Newton's theory is thought to be exactly correct in the limit of weak

**gravitational fields**and low speeds and all other theories of gravity need to ... theory and to establish a Lorentz invariant

**gravitational**law, in which the speed of gravity is that of light ...

### Famous quotes containing the word field:

“The poet will write for his peers alone. He will remember only that he saw truth and beauty from his position, and expect the time when a vision as broad shall overlook the same *field* as freely.”

—Henry David Thoreau (1817–1862)