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Classical mechanics was traditionally divided into three main branches. Statics is the branch of classical mechanics that is concerned with the analysis of force and torque acting on a physical system that does not experience an acceleration, but rather is in equilibrium with its environment. [3]
Static force fields are fields, such as a simple electric, magnetic or gravitational fields, that exist without excitations.The most common approximation method that physicists use for scattering calculations can be interpreted as static forces arising from the interactions between two bodies mediated by virtual particles, particles that exist for only a short time determined by the ...
The first field theories, Newtonian gravitation and Maxwell's equations of electromagnetic fields were developed in classical physics before the advent of relativity theory in 1905, and had to be revised to be consistent with that theory. Consequently, classical field theories are usually categorized as non-relativistic and relativistic.
Static field may refer to: Electrostatic field, an electric field that does not change with time; Magnetostatic field, a stationary magnetic field, see Magnetostatics; Class variable, a variable declared with the static keyword in object-oriented programming languages
Electric field from positive to negative charges. Gauss's law describes the relationship between an electric field and electric charges: an electric field points away from positive charges and towards negative charges, and the net outflow of the electric field through a closed surface is proportional to the enclosed charge, including bound charge due to polarization of material.
where n is the number of charges, q i is the amount of charge associated with the ith charge, r i is the position of the ith charge, r is the position where the electric field is being determined, and ε 0 is the electric constant. If the field is instead produced by a continuous distribution of charge, the summation becomes an integral:
This article uses T and T 3 for weak isospin and its projection. Regarding ambiguous notation, I is also used to represent the 'normal' (strong force) isospin, same for its third component I 3 a.k.a. T 3 or T z . Aggravating the confusion, T is also used as the symbol for the Topness quantum number.
The Bonne projection is a pseudoconical equal-area map projection, sometimes called a dépôt de la guerre, [1]: 104 modified Flamsteed, [1]: 104 or a Sylvanus projection. [ 1 ] : 92 Although named after Rigobert Bonne (1727–1795), the projection was in use prior to his birth, by Sylvanus in 1511, Honter in 1561, De l'Isle before 1700 and ...