15 Facts About Physical field

In physics, a field is a physical quantity, represented by a scalar, vector, or tensor, that has a value for each point in space and time.

Field can be classified as a scalar field, a vector field, a spinor field or a tensor field according to whether the represented physical quantity is a scalar, a vector, a spinor, or a tensor, respectively.

Development of the independent concept of a Physical field truly began in the nineteenth century with the development of the theory of electromagnetism.

Classical Physical field theories remain useful wherever quantum properties do not arise, and can be active areas of research.

Classical Physical field theory describing gravity is Newtonian gravitation, which describes the gravitational force as a mutual interaction between two masses.

Experimental observation that inertial mass and gravitational mass are equal to an unprecedented level of accuracy leads to the identity that gravitational Physical field strength is identical to the acceleration experienced by a particle.

Physical field realized that electric and magnetic fields are not only fields of force which dictate the motion of particles, but have an independent physical reality because they carry energy.

Electric Physical field is conservative, and hence can be described by a scalar potential, V:.

Magnetic Physical field is not conservative in general, and hence cannot usually be written in terms of a scalar potential.

In quantum chromodynamics, the color Physical field lines are coupled at short distances by gluons, which are polarized by the Physical field and line up with it.

Usually this is done by writing a Lagrangian or a Hamiltonian of the Physical field, and treating it as a classical or quantum mechanical system with an infinite number of degrees of freedom.

The resulting Physical field theories are referred to as classical or quantum Physical field theories.

Dynamics of a classical Physical field are usually specified by the Lagrangian density in terms of the Physical field components; the dynamics can be obtained by using the action principle.

Much like statistical mechanics has some overlap between quantum and classical mechanics, statistical Physical field theory has links to both quantum and classical Physical field theories, especially the former with which it shares many methods.

In particular, it is often mathematically convenient to take a continuous random Physical field to have a Schwartz space of functions as its index set, in which case the continuous random Physical field is a tempered distribution.