Electromagnetismo

ELECTROMAGNETISM
Electromagnetism is the branch of science concerned with the forces that occur between electrically charged particles. In electromagnetic theory these forces are explained usingelectromagnetic fields. The electromagnetic force is one of the four fundamental interactions in nature, the other three being the strong interaction, the weak interaction and gravitation.
The word is acompound from two Greek terms, ἢλεκτρον, ēlektron, "amber" (as electrostatic phenomena were first described as properties of amber by the philosopher Thales), and μαγνήτης, magnētēs, "magnet" (themagnetic stones found in antiquity in the vicinity of the Greek city of Magnesia, in Lydia, Asia Minor).
Electromagnetism is the interaction responsible for almost all the phenomena encountered indaily life, with the exception of gravity. Ordinary matter takes its form as a result of intermolecular forces between individual molecules in matter. Electrons are bound by electromagnetic wave mechanicsinto orbitals around atomic nuclei to form atoms, which are the building blocks of molecules. This governs the processes involved in chemistry, which arise from interactions between the electrons ofneighboring atoms, which are in turn determined by the interaction between electromagnetic force and the momentum of the electrons.
There are numerous mathematical descriptions of the electromagneticfield. Electromagnetism manifests as both electric fields and magnetic fields. Both fields are simply different aspects of electromagnetism, and hence are intrinsically related - a changing electricfield generates a magnetic field; conversely a changing magnetic field generates an electric field. This effect is called electromagnetic induction, and is the basis of operation for generators,induction, and transformers. Mathematically speaking, magnetic fields and electric fields are convertible with relative motion as a 2nd-order tensor orbivector.
Electric fields are the cause of several...