FACTOID #53: If you thought Antarctica was inhospitable, think again - its land area is only ninety-eight percent ice. Reassuringly, the other 2% is categorised as "barren rock".
ʐIn physics, the field strength of a field is the magnitude of its vector (spatial) value. Since antiquity, people have tried to understand the behavior of matter: why unsupported objects drop to the ground, why different materials have different properties, and so forth. ... Field (physics) - Wikipedia, the free encyclopedia /**/ @import /skins-1. ... // Real numbers The magnitude of a real number is usually called the absolute value or modulus. ... In physics and in vector calculus, a spatial vector is a concept characterized by a magnitude, which is a scalar, and a direction (which can be defined in a 3-dimensional space by the Euler angles). ...
In theoretical physics, the field strength is just another name for the curvature form. For the electromagnetic field, the curvature form is just an antisymmetric matrix whose elements are the electric field and magnetic field: the electromagnetic tensor. Theoretical physics is physics that employs mathematical models and abstractions rather than experimental processes. ... In differential geometry, the curvature form describes curvature of principal bundle with connection. ... In the physics of electromagnetism, an electromagnetic field is a field composed of two related vector fields: the electric field and the magnetic field. ... In linear algebra, a skew-symmetric (or antisymmetric) matrix is a square matrix A whose transpose is also its negative; that is, it satisfies the equation: AT = −A or in component form, if A = (aij): aij = − aji for all i and j. ... In physics, an electric field or E-field is an effect produced by an electric charge that exerts a force on charged objects in its vicinity. ... Current flowing through a wire produces a magnetic field (M) around the wire. ... In electromagnetism, the electromagnetic tensor, or electromagnetic field tensor, F, is defined as: where Ai is the vector potential. ...
The direction of the field is the equilibrium direction of a compass needle placed in the field.
Formally, the magnetic field is not a vector, it is a pseudovector.
Electromagnetism - the physics of the electromagnetic field: a field, encompassing all of space, composed of the electric field and the magnetic field.
Electric fieldstrength is location dependent, and its magnitude decreases as the distance from a location to the source increases.
And of course the strength of the fields are proportional to the effect upon the detector.
Yet the fieldstrength is defined as the effect (or force) per sensitivity of the detector; so the fieldstrength of a stinky diaper or of an electric charge is not dependent upon the sensitivity of the detector.
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