micro
"Micro" as a prefix denotes "one millionths", making a micrometre a millionth of a metre. ...
metre
In the international system of units (SI), the basic unit for length. Since 1983, the official definition uses the constancy of the speed of light as postulated in special relativity: the metre is defined with the help of the basic unit for ...
Mercury
The planet closest to the sun. In the context of general relativity it is of interest because, for this planet, the deviation from the orbits of Newtonian gravity the theory predicts, the relativistic perihelion shift, is especially great. The concord between ...
mechanics
Branch of physics dealing with the motions of objects and how they react to forces acting on them. Depending on the framework used, there is classical mechanics, relativistic mechanics and quantum ...
mechanics, relativistic
The generalization of classical mechanics that takes into account the effects of special relativity. The basic laws are almost unchanged: First of all, bodies on which no external forces act stay at rest or move with constant speed along straight paths - ...
mechanics, classical
Synonym: Newtonian mechanics. According to classical mechanics, the movements of bodies are regulated by Newton's three laws of mechanics. The first law states that bodies on which no external force acts stay at rest or move with constant speed along a ...
Maxwell’s equations
The four fundamental equations of electromagnetism that describe how magnetic and electric influences (in physics language: electric and magnetic fields) are produced: Electric fields are produced whenever there are electric charges or, alternatively, when ...
