Tags

A tag is a keyword or label that categorizes your question with other, similar questions. Using the right tags makes it easier for others to find and answer your question.

 Type to find tags:
 plasma-physics× 239 Theory, lab and space experiments, and calculations related the physics of [plasmas](https://en.wikipedia.org/wiki/Plasma_(physics)), i.e., matter constituted by [ionized atoms](https://en.wikipedia.o… linear-algebra× 235 To be used for linear algebra, and closely related disciplines such as tensor algebras and maybe clifford algebras. induction× 235 crystals× 235 solid material whose constituents, such as atoms, molecules or ions, are *arranged in a highly ordered microscopic pattern*, a crystal lattice that extends with regularity in all directio… lenses× 233 elasticity× 232 Questions related to the Continuum Mechanics Division of Elasticity. The bending of beams, deflection of rods, or in general, applications of Hooke's Law generalized to three dimensions. celestial-mechanics× 232 rigid-body-dynamics× 230 The study of the movements of a collection of connected bodies subject to external forces in the absence of deformation. This tag should be used for questions on the analysis of 2D/3D dynamics of rigi… radioactivity× 230 The property of some materials by which individual atoms decay, emitting energy or particles often transforming into different elements in the process. software× 230 physical-constants× 227 relative-motion× 223 statics× 222 Analysis of a system of bodies where all forces are in balance and there is no motion relative to a chosen reference frame. estimation× 221 geodesics× 220 For questions involving consideration of the shortest (or longest) path between two points in a curved space (e.g. a straight line between two points on the surface of a sphere such as the earth). quarks× 219 The quark model postulates that the hadrons such as protons and neutrons have an inner structure; quarks. error-analysis× 216 Techniques and methods for computing, estimating, or placing bounds on the errors of expressions (formulas) based on knowledge of error distributions, error intervals or bounds of variables and parame… dark-energy× 215 the unknown form of energy that drives the acceleration of the universe's expansion. hydrogen× 215 Could refer to (1) A hydrogen molecule; two hydrogen atoms bonded together or (2) A hydrogen atom; One electron electromagnetically interacting with a nucleus made of a single proton. Hydrogen atoms a… wavelength× 215 the spatial period of the wave—the distance over which the wave's shape repeats, and the inverse of the spatial frequency or wavenumber. Determined by consideri… coulombs-law× 214 A fundamental and empirical law quantifying the electrostatic force between two charges. equilibrium× 213 discrete× 212 Discrete means as opposed to continuous. For, instance, people may ask questions about discrete electric charges, discrete spacetime, discrete energies, etc. If discretization is vital/essenti… geophysics× 209 The study of the physical processes and properties of the planet Earth. Applicable to many subjects about Earth, such as its shape, its magnetic field, and ocean currents. buoyancy× 208 Use "buoyancy" for any question where an object is suspended or submerged in a fluid. Buoyant force is the force that acts upward on a partially or completely submerged object. electronics× 207 the study of electric circuits and electrical components, and the design of useful devices. Some questions in this tag may be more appropriate for the [Electrical Engineering(http://ele… centrifugal-force× 206 eigenvalue× 202 A linear operator (including a matrix) acting on a non-zero *eigenvector* preserves its direction but, in general, scales its magnitude by a scalar quantity *λ* called the *eigenvalue* or characteri… complex-numbers× 201 Numbers of the form $\{z= x+ i\,y:\;x,\, y\in\mathbb{R}\}$ where $i^2 = -1$. Useful especially as quantum mechanics, where system states take complex vector values. superposition× 201 A basic principle of solutions of *linear* differential (often wave) equations, ensuring that the sum ("superposition") of two solutions is automatically a solution as well. Conversely, solutions (amo… photoelectric-effect× 200 The observed behavior in which light falling on certain metals can eject electrons from the surface. fusion× 200 many-body× 200 Many body covers questions about systems consisting of a great number of particles and techniques used to tackle them. stress-strain× 197 electronic-band-theory× 195 continuum-mechanics× 194 a branch of mechanics that deals with the analysis of the kinematics and the mechanical behavior of materials modeled as a continuous mass rather than as discrete particles.