# 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:
 capacitance× 183 home-experiment× 178 questions concerning measurements, experiments, and activities that demonstrate physics and are safe to do at home, require at most one tool or ingredient not readily available, and can be interpreted… group-theory× 177 a branch of abstract algebra. A group is a set of objects, together with a binary operation, that satisfies four axioms. The set must be closed under the operation and contain an ident… units× 177 standards of measurement used for different types of quantities. atomic-physics× 176 the field of physics that studies atoms as an isolated system of electrons and an atomic nucleus. It is primarily concerned with the arrangement of electrons around the nucleus and t… physical-chemistry× 173 Study of macroscopic and microscopic phenomena in chemical systems in terms of physical laws and concepts [thermodynamics, statistical mechanics, kinetic theory, quantum mechanics...]. collision× 172 Interaction between two or more bodies that results in physical contact and an exchange of momentum between the bodies involved. work× 169 The product of the force on an object and the displacement the object undergoes along the direction of the force. thermal-radiation× 166 The temperature-dependant emission of electromagnetic waves. Combine this tag with [tag:thermodynamics] for a macroscopic view or [tag:quantum-mechanics] for a microscopic explanation. field-theory× 166 projectile× 165 Object moving through space due to the exertion of a force. definition× 162 is used in situations where the question is either about how some term or concept is define or where the validity of an answer depends on a subtle definition of some term or concept… sun× 162 an almost perfectly symmetric yellow dwarf star [spectral class G2V] which is at the center of our Solar System. dimensions× 161 for dimensions of a manifold, typically the space-time. DO NOT USE THIS TAG for dimension of a physical quantity. quantum-computer× 155 superconductivity× 154 the transmission of current with no resistive losses, and is one of the most active areas of condensed matter physics research. faster-than-light× 153 "Faster-than-light", also known as superluminal velocities, refers to any sort of travel at a speed greater than the speed of light. Prohibited in mainstream physics due to the Special theory of … popular-science× 152 must be answered in a manner that can be understood by a general audience with at most a basic understanding of physics, mathematics and related sciences. Apply it to questions w… measurement-problem× 152 for questions about the exact nature of wavefunction collapse. solar-system× 151 The Sun plus the collection of bodies in orbit around the Sun such as planets, dwarf planets, moons, asteroids, comets, etc. vacuum× 151 A region of space devoid of any fluid molecules resulting in a zero pressure in ideal cases. In practice, even space has a small but finite number of molecules. torque× 147 The tendency of a force to rotate an object about an arbitrary axis. quantum-chromodynamics× 147 the quantum field theory believed to describe the strong nuclear force. potential-energy× 147 the energy of a body or a system due to the position of the body or the arrangement of the particles of the system. geometry× 146 To be used for questions on geometry closely pertaining to physics. Includes differential geometry and euclidean geometry. voltage× 146 the unit of measurement for electronic potential, from one point location to another. refraction× 142 Change in the direction of propagation of a wave when its transmitting medium changes. aerodynamics× 141 A subset of [tag:fluid-dynamics] concerning primarily forces such as lift and drag generated on bodies as they move through gasses or as gasses move through the body (typically air). resistance× 140 to electrical resistance. DO NOT USE THIS TAG for non-electrical resistance. spectroscopy× 139 the practice of separating a signal by frequency (or sometimes energy or momentum) and analyzing the resulting spectrum. polarization× 139 Polarization characterizes the oscillations in time the electromagnetic field is doing in the plane perpendicular to the propagation direction of a wave double-slit-experiment× 138 fourier-transform× 136 A unitary linear operator which resolves a function on $\mathbb{R}^N$ into a linear superposition of "plane wave functions". Most often used in physics for calcalating the response of a time shift inv… computational-physics× 136 Subdiscipline of theoretical physics which consists in the study of physics problems using numerical algorithms. PLEASE NOTE that questions about computational methods and/or programming are OFF-TOPIC… higgs-boson× 136 A particle that emerges from the theoretical mechanism that is thought to give other particles mass. group-representations× 135