electron
Low-mass elementary particle with negative electric charge. The atoms that are the constituents of everyday matter each consists of a nucleus surrounded by a shell of ...
electron volt
Standard unit of energy in particle physics. One electronvolt is the energy gained by an electron that is being accelerated by an electric potential difference ("electric voltage") of 1 volt. One electronvolt, in short: 1 eV is equivalent to 1.602176·10-19 ...
electromagnetism
Electromagnetism is the totality of all phenomena associated with the presence of electric charges, such as the electric force, magnetic force or electromagnetic waves. The basic laws of electromagnetism are Maxwell's equations. In the context of special ...
electromagnetic radiation
Electromagnetic influences (in the language of physics: electric and magnetic field) which, even with no electric charges present, are locked in a state of mutual excitation so that they form a wave that propagates through space. As this wave transports ...
electrodynamics
That part of physics concerned with the study of electromagnetism, in particular with electric and magnetic fields that change over ...
electric field
The electric force is a force by which electric charges act on each other; the electric field is the associated field. Electric fields cannot be understood separate from magnetic fields - their complete description is only possible within the ...
electric charge
The charge associated with electromagnetism: a property of objects that determines the strength of the electric force with which they act on other charged objects, and the strength of electric forces by which other such objects act on them. Moving electric ...
Einstein’s equation
Einstein's equations are the cornerstone of his general theory of relativity. They describe how the distortions of spacetime are connected with the properties (mass, energy, pressure...) of whatever matter is present. Using a compact version of ...
