Table of Contents
277 relations: Acceleration, Aerodynamics, Albert Einstein, Angle, Angular acceleration, Angular momentum, Angular velocity, Antiparticle, Archimedes, Archimedes' principle, Aristotelian physics, Aristotle, Asteroid, Atmospheric science, Atom, Atomic nucleus, Basis (linear algebra), Basketball (ball), Beta decay, Big Bang, Body relative direction, Born rule, Boyle's law, Buoyancy, Center of mass, Centimetre–gram–second system of units, Centrifugal force, Charged current, Circular motion, Circular symmetry, Classical antiquity, Classical element, Classical mechanics, Closed system, Color confinement, Comet, Compression (physics), Conservation of energy, Conservative force, Contact force, Continuum mechanics, Contour line, Coriolis force, Coulomb's law, Course of Theoretical Physics, Cross product, Cross section (geometry), Curved space, Deformation (engineering), Density, ... Expand index (227 more) »
- Vector physical quantities
Acceleration
In mechanics, acceleration is the rate of change of the velocity of an object with respect to time. Force and acceleration are vector physical quantities.
Aerodynamics
Aerodynamics (ἀήρ aero (air) + δυναμική (dynamics)) is the study of the motion of air, particularly when affected by a solid object, such as an airplane wing.
Albert Einstein
Albert Einstein (14 March 1879 – 18 April 1955) was a German-born theoretical physicist who is widely held as one of the most influential scientists. Best known for developing the theory of relativity, Einstein also made important contributions to quantum mechanics. His mass–energy equivalence formula, which arises from relativity theory, has been called "the world's most famous equation".
Angle
In Euclidean geometry, an angle is the figure formed by two rays, called the sides of the angle, sharing a common endpoint, called the vertex of the angle.
See Force and Angle
Angular acceleration
In physics, angular acceleration (symbol α, alpha) is the time rate of change of angular velocity. Force and angular acceleration are Temporal rates.
See Force and Angular acceleration
Angular momentum
Angular momentum (sometimes called moment of momentum or rotational momentum) is the rotational analog of linear momentum.
See Force and Angular momentum
Angular velocity
In physics, angular velocity (symbol or \vec, the lowercase Greek letter omega), also known as angular frequency vector,(UP1) is a pseudovector representation of how the angular position or orientation of an object changes with time, i.e. how quickly an object rotates (spins or revolves) around an axis of rotation and how fast the axis itself changes direction. Force and angular velocity are Temporal rates.
See Force and Angular velocity
Antiparticle
In particle physics, every type of particle of "ordinary" matter (as opposed to antimatter) is associated with an antiparticle with the same mass but with opposite physical charges (such as electric charge).
Archimedes
Archimedes of Syracuse was an Ancient Greek mathematician, physicist, engineer, astronomer, and inventor from the ancient city of Syracuse in Sicily.
Archimedes' principle
Archimedes' principle (also spelled Archimedes's principle) states that the upward buoyant force that is exerted on a body immersed in a fluid, whether fully or partially, is equal to the weight of the fluid that the body displaces.
See Force and Archimedes' principle
Aristotelian physics
Aristotelian physics is the form of natural philosophy described in the works of the Greek philosopher Aristotle (384–322 BC).
See Force and Aristotelian physics
Aristotle
Aristotle (Ἀριστοτέλης Aristotélēs; 384–322 BC) was an Ancient Greek philosopher and polymath.
Asteroid
An asteroid is a minor planet—an object that is neither a true planet nor an identified comet— that orbits within the inner Solar System.
Atmospheric science
Atmospheric science is the study of the Earth's atmosphere and its various inner-working physical processes.
See Force and Atmospheric science
Atom
Atoms are the basic particles of the chemical elements.
See Force and Atom
Atomic nucleus
The atomic nucleus is the small, dense region consisting of protons and neutrons at the center of an atom, discovered in 1911 by Ernest Rutherford based on the 1909 Geiger–Marsden gold foil experiment.
Basis (linear algebra)
In mathematics, a set of vectors in a vector space is called a basis (bases) if every element of may be written in a unique way as a finite linear combination of elements of.
See Force and Basis (linear algebra)
Basketball (ball)
A basketball is a spherical ball used in basketball games.
See Force and Basketball (ball)
Beta decay
In nuclear physics, beta decay (β-decay) is a type of radioactive decay in which an atomic nucleus emits a beta particle (fast energetic electron or positron), transforming into an isobar of that nuclide.
Big Bang
The Big Bang is a physical theory that describes how the universe expanded from an initial state of high density and temperature.
Body relative direction
Body relative directions (also known as egocentric coordinates) are geometrical orientations relative to a body such as a human person's body or a road sign.
See Force and Body relative direction
Born rule
The Born rule is a postulate of quantum mechanics that gives the probability that a measurement of a quantum system will yield a given result.
Boyle's law
Boyle's law, also referred to as the Boyle–Mariotte law or Mariotte's law (especially in France), is an empirical gas law that describes the relationship between pressure and volume of a confined gas.
Buoyancy
Buoyancy, or upthrust, is a gravitational force, a net upward force exerted by a fluid that opposes the weight of a partially or fully immersed object.
Center of mass
In physics, the center of mass of a distribution of mass in space (sometimes referred to as the barycenter or balance point) is the unique point at any given time where the weighted relative position of the distributed mass sums to zero. Force and center of mass are classical mechanics.
Centimetre–gram–second system of units
The centimetre–gram–second system of units (CGS or cgs) is a variant of the metric system based on the centimetre as the unit of length, the gram as the unit of mass, and the second as the unit of time.
See Force and Centimetre–gram–second system of units
Centrifugal force
Centrifugal force is a fictitious force in Newtonian mechanics (also called an "inertial" or "pseudo" force) that appears to act on all objects when viewed in a rotating frame of reference.
See Force and Centrifugal force
Charged current
Charged current interactions are one of the ways in which subatomic particles can interact by means of the weak force.
Circular motion
In physics, circular motion is a movement of an object along the circumference of a circle or rotation along a circular arc. Force and circular motion are classical mechanics.
Circular symmetry
In geometry, circular symmetry is a type of continuous symmetry for a planar object that can be rotated by any arbitrary angle and map onto itself.
See Force and Circular symmetry
Classical antiquity
Classical antiquity, also known as the classical era, classical period, classical age, or simply antiquity, is the period of cultural European history between the 8th century BC and the 5th century AD comprising the interwoven civilizations of ancient Greece and ancient Rome known together as the Greco-Roman world, centered on the Mediterranean Basin.
See Force and Classical antiquity
Classical element
The classical elements typically refer to earth, water, air, fire, and (later) aether which were proposed to explain the nature and complexity of all matter in terms of simpler substances.
See Force and Classical element
Classical mechanics
Classical mechanics is a physical theory describing the motion of objects such as projectiles, parts of machinery, spacecraft, planets, stars, and galaxies.
See Force and Classical mechanics
Closed system
A closed system is a natural physical system that does not allow transfer of matter in or out of the system, althoughin the contexts of physics, chemistry, engineering, etc.
Color confinement
In quantum chromodynamics (QCD), color confinement, often simply called confinement, is the phenomenon that color-charged particles (such as quarks and gluons) cannot be isolated, and therefore cannot be directly observed in normal conditions below the Hagedorn temperature of approximately 2 terakelvin (corresponding to energies of approximately 130–140 MeV per particle).
See Force and Color confinement
Comet
A comet is an icy, small Solar System body that warms and begins to release gases when passing close to the Sun, a process called outgassing.
See Force and Comet
Compression (physics)
In mechanics, compression is the application of balanced inward ("pushing") forces to different points on a material or structure, that is, forces with no net sum or torque directed so as to reduce its size in one or more directions.
See Force and Compression (physics)
Conservation of energy
The law of conservation of energy states that the total energy of an isolated system remains constant; it is said to be ''conserved'' over time.
See Force and Conservation of energy
Conservative force
In physics, a conservative force is a force with the property that the total work done by the force in moving a particle between two points is independent of the path taken.
See Force and Conservative force
Contact force
A contact force is any force that occurs as a result of two objects making contact with each other.
Continuum mechanics
Continuum mechanics is a branch of mechanics that deals with the deformation of and transmission of forces through materials modeled as a continuous medium (also called a continuum) rather than as discrete particles. Force and continuum mechanics are classical mechanics.
See Force and Continuum mechanics
Contour line
A contour line (also isoline, isopleth, isoquant or isarithm) of a function of two variables is a curve along which the function has a constant value, so that the curve joins points of equal value.
Coriolis force
In physics, the Coriolis force is an inertial (or fictitious) force that acts on objects in motion within a frame of reference that rotates with respect to an inertial frame. Force and Coriolis force are classical mechanics.
Coulomb's law
Coulomb's inverse-square law, or simply Coulomb's law, is an experimental law of physics that calculates the amount of force between two electrically charged particles at rest.
Course of Theoretical Physics
The Course of Theoretical Physics is a ten-volume series of books covering theoretical physics that was initiated by Lev Landau and written in collaboration with his student Evgeny Lifshitz starting in the late 1930s. Force and Course of Theoretical Physics are classical mechanics.
See Force and Course of Theoretical Physics
Cross product
In mathematics, the cross product or vector product (occasionally directed area product, to emphasize its geometric significance) is a binary operation on two vectors in a three-dimensional oriented Euclidean vector space (named here E), and is denoted by the symbol \times.
Cross section (geometry)
In geometry and science, a cross section is the non-empty intersection of a solid body in three-dimensional space with a plane, or the analog in higher-dimensional spaces.
See Force and Cross section (geometry)
Curved space
Curved space often refers to a spatial geometry which is not "flat", where a flat space has zero curvature, as described by Euclidean geometry.
Deformation (engineering)
In engineering, deformation (the change in size or shape of an object) may be elastic or plastic.
See Force and Deformation (engineering)
Density
Density (volumetric mass density or specific mass) is a substance's mass per unit of volume.
Diagonal
In geometry, a diagonal is a line segment joining two vertices of a polygon or polyhedron, when those vertices are not on the same edge.
Displacement field (mechanics)
In mechanics, a displacement field is the assignment of displacement vectors for all points in a region or body that are displaced from one state to another. Force and displacement field (mechanics) are vector physical quantities.
See Force and Displacement field (mechanics)
Drag (physics)
In fluid dynamics, drag, sometimes referred to as fluid resistance, is a force acting opposite to the relative motion of any object, moving with respect to a surrounding fluid.
Dynamic pressure
In fluid dynamics, dynamic pressure (denoted by or and sometimes called velocity pressure) is the quantity defined by:Clancy, L.J., Aerodynamics, Section 3.5 where (in SI units).
See Force and Dynamic pressure
Dyne
The dyne (symbol: dyn) is a derived unit of force specified in the centimetre–gram–second (CGS) system of units, a predecessor of the modern SI.
See Force and Dyne
Earth
Earth is the third planet from the Sun and the only astronomical object known to harbor life.
See Force and Earth
Ehrenfest theorem
The Ehrenfest theorem, named after Austrian theoretical physicist Paul Ehrenfest, relates the time derivative of the expectation values of the position and momentum operators x and p to the expectation value of the force F.
See Force and Ehrenfest theorem
Elasticity (physics)
In physics and materials science, elasticity is the ability of a body to resist a distorting influence and to return to its original size and shape when that influence or force is removed.
See Force and Elasticity (physics)
Electric charge
Electric charge (symbol q, sometimes Q) is the physical property of matter that causes it to experience a force when placed in an electromagnetic field.
Electric current
An electric current is a flow of charged particles, such as electrons or ions, moving through an electrical conductor or space.
See Force and Electric current
Electric field
An electric field (sometimes called E-field) is the physical field that surrounds electrically charged particles.
Electromagnetic spectrum
The electromagnetic spectrum is the full range of electromagnetic radiation, organized by frequency or wavelength.
See Force and Electromagnetic spectrum
Electromagnetism
In physics, electromagnetism is an interaction that occurs between particles with electric charge via electromagnetic fields.
See Force and Electromagnetism
Electron
The electron (or in nuclear reactions) is a subatomic particle with a negative one elementary electric charge.
Electron degeneracy pressure
In astrophysics and condensed matter physics, electron degeneracy pressure is a quantum mechanical effect critical to understanding the stability of white dwarf stars and metal solids.
See Force and Electron degeneracy pressure
Electroweak interaction
In particle physics, the electroweak interaction or electroweak force is the unified description of two of the four known fundamental interactions of nature: electromagnetism (electromagnetic interaction) and the weak interaction.
See Force and Electroweak interaction
Energy
Energy is the quantitative property that is transferred to a body or to a physical system, recognizable in the performance of work and in the form of heat and light.
See Force and Energy
English units
English units were the units of measurement used in England up to 1826 (when they were replaced by Imperial units), which evolved as a combination of the Anglo-Saxon and Roman systems of units.
Entropy
Entropy is a scientific concept that is most commonly associated with a state of disorder, randomness, or uncertainty.
Ernst Mach
Ernst Waldfried Josef Wenzel Mach (18 February 1838 – 19 February 1916) was an Austrian physicist and philosopher, who contributed to the physics of shock waves.
Euclidean vector
In mathematics, physics, and engineering, a Euclidean vector or simply a vector (sometimes called a geometric vector or spatial vector) is a geometric object that has magnitude (or length) and direction.
See Force and Euclidean vector
European Journal of Physics
The European Journal of Physics is a peer-reviewed, scientific journal dedicated to maintaining and improving the standard of physics education in higher education.
See Force and European Journal of Physics
Expectation value (quantum mechanics)
In quantum mechanics, the expectation value is the probabilistic expected value of the result (measurement) of an experiment.
See Force and Expectation value (quantum mechanics)
External ballistics
External ballistics or exterior ballistics is the part of ballistics that deals with the behavior of a projectile in flight.
See Force and External ballistics
Fermion
In particle physics, a fermion is a particle that follows Fermi–Dirac statistics.
Feynman diagram
In theoretical physics, a Feynman diagram is a pictorial representation of the mathematical expressions describing the behavior and interaction of subatomic particles.
Flight
Flight or flying is the process by which an object moves through a space without contacting any planetary surface, either within an atmosphere (i.e. air flight or aviation) or through the vacuum of outer space (i.e. spaceflight).
See Force and Flight
Fluid
In physics, a fluid is a liquid, gas, or other material that may continuously move and deform (flow) under an applied shear stress, or external force.
See Force and Fluid
Fluid mechanics
Fluid mechanics is the branch of physics concerned with the mechanics of fluids (liquids, gases, and plasmas) and the forces on them.
Foot–pound–second system of units
The foot–pound–second system (FPS system) is a system of units built on three fundamental units: the foot for length, the (avoirdupois) pound for either mass or force (see below), and the second for time.
See Force and Foot–pound–second system of units
Foundations of Science
Foundations of Science is a peer-reviewed interdisciplinary academic journal focussing on methodological and philosophical topics concerning the structure and the growth of science.
See Force and Foundations of Science
Four-acceleration
In the theory of relativity, four-acceleration is a four-vector (vector in four-dimensional spacetime) that is analogous to classical acceleration (a three-dimensional vector, see three-acceleration in special relativity).
See Force and Four-acceleration
Four-force
In the special theory of relativity, four-force is a four-vector that replaces the classical force.
Four-momentum
In special relativity, four-momentum (also called momentum–energy or momenergy) is the generalization of the classical three-dimensional momentum to four-dimensional spacetime.
Four-vector
In special relativity, a four-vector (or 4-vector, sometimes Lorentz vector) is an object with four components, which transform in a specific way under Lorentz transformations.
Frame of reference
In physics and astronomy, a frame of reference (or reference frame) is an abstract coordinate system whose origin, orientation, and scale are specified by a set of reference points―geometric points whose position is identified both mathematically (with numerical coordinate values) and physically (signaled by conventional markers).
See Force and Frame of reference
Free body diagram
In physics and engineering, a free body diagram (FBD; also called a force diagram) is a graphical illustration used to visualize the applied forces, moments, and resulting reactions on a body in a given condition.
See Force and Free body diagram
Free fall
In classical mechanics, free fall is any motion of a body where gravity is the only force acting upon it.
Friction
Friction is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other. Force and Friction are classical mechanics.
Fundamental interaction
In physics, the fundamental interactions or fundamental forces are the interactions that do not appear to be reducible to more basic interactions.
See Force and Fundamental interaction
Galilean invariance
Galilean invariance or Galilean relativity states that the laws of motion are the same in all inertial frames of reference. Force and Galilean invariance are classical mechanics.
See Force and Galilean invariance
Galileo Galilei
Galileo di Vincenzo Bonaiuti de' Galilei (15 February 1564 – 8 January 1642), commonly referred to as Galileo Galilei or simply Galileo, was an Italian astronomer, physicist and engineer, sometimes described as a polymath.
Gauge boson
In particle physics, a gauge boson is a bosonic elementary particle that acts as the force carrier for elementary fermions.
General relativity
General relativity, also known as the general theory of relativity and Einstein's theory of gravity, is the geometric theory of gravitation published by Albert Einstein in 1915 and is the current description of gravitation in modern physics.
See Force and General relativity
Geodesic
In geometry, a geodesic is a curve representing in some sense the shortest path (arc) between two points in a surface, or more generally in a Riemannian manifold.
Gluon
A gluon is a type of massless elementary particle that mediates the strong interaction between quarks, acting as the exchange particle for the interaction.
See Force and Gluon
Gottfried Wilhelm Leibniz
Gottfried Wilhelm Leibniz (– 14 November 1716) was a German polymath active as a mathematician, philosopher, scientist and diplomat who invented calculus in addition to many other branches of mathematics, such as binary arithmetic, and statistics.
See Force and Gottfried Wilhelm Leibniz
Gradient
In vector calculus, the gradient of a scalar-valued differentiable function f of several variables is the vector field (or vector-valued function) \nabla f whose value at a point p gives the direction and the rate of fastest increase.
Gravitational acceleration
In physics, gravitational acceleration is the acceleration of an object in free fall within a vacuum (and thus without experiencing drag). Force and gravitational acceleration are Temporal rates.
See Force and Gravitational acceleration
Gravitational constant
The gravitational constant is an empirical physical constant involved in the calculation of gravitational effects in Sir Isaac Newton's law of universal gravitation and in Albert Einstein's theory of general relativity.
See Force and Gravitational constant
Gravitational field
In physics, a gravitational field or gravitational acceleration field is a vector field used to explain the influences that a body extends into the space around itself.
See Force and Gravitational field
Gravitational metric system
The gravitational metric system (original French term Système des Méchaniciens) is a non-standard system of units, which does not comply with the International System of Units (SI).
See Force and Gravitational metric system
Gravity
In physics, gravity is a fundamental interaction which causes mutual attraction between all things that have mass.
Hadron
In particle physics, a hadron is a composite subatomic particle made of two or more quarks held together by the strong interaction.
See Force and Hadron
Henry Cavendish
Henry Cavendish (10 October 1731 – 24 February 1810) was an English natural philosopher and scientist who was an important experimental and theoretical chemist and physicist.
Hooke's law
In physics, Hooke's law is an empirical law which states that the force needed to extend or compress a spring by some distance scales linearly with respect to that distance—that is, where is a constant factor characteristic of the spring (i.e., its stiffness), and is small compared to the total possible deformation of the spring.
I. Bernard Cohen
I.
See Force and I. Bernard Cohen
Impulse (physics)
In classical mechanics, impulse (symbolized by or Imp) is the change in momentum of an object. Force and impulse (physics) are classical mechanics and vector physical quantities.
See Force and Impulse (physics)
Inertia
Inertia is the tendency of objects in motion to stay in motion and objects at rest to stay at rest, unless a force causes its speed or direction to change. Force and Inertia are classical mechanics.
Inertial frame of reference
In classical physics and special relativity, an inertial frame of reference (also called inertial space, or Galilean reference frame) is a stationary or uniformly moving frame of reference. Force and inertial frame of reference are classical mechanics.
See Force and Inertial frame of reference
Integral
In mathematics, an integral is the continuous analog of a sum, which is used to calculate areas, volumes, and their generalizations.
Internal energy
The internal energy of a thermodynamic system is the energy contained within it, measured as the quantity of energy necessary to bring the system from its standard internal state to its present internal state of interest, accounting for the gains and losses of energy due to changes in its internal state, including such quantities as magnetization.
International System of Units
The International System of Units, internationally known by the abbreviation SI (from French Système international d'unités), is the modern form of the metric system and the world's most widely used system of measurement.
See Force and International System of Units
Internet Archive
The Internet Archive is an American nonprofit digital library founded in 1996 by Brewster Kahle.
See Force and Internet Archive
Invariant mass
The invariant mass, rest mass, intrinsic mass, proper mass, or in the case of bound systems simply mass, is the portion of the total mass of an object or system of objects that is independent of the overall motion of the system.
Inverse-square law
In science, an inverse-square law is any scientific law stating that the observed "intensity" of a specified physical quantity is inversely proportional to the square of the distance from the source of that physical quantity.
See Force and Inverse-square law
Isaac Beeckman
Isaac Beeckman (10 December 1588van Berkel, p10 – 19 May 1637) was a Dutch philosopher and scientist, who, through his studies and contact with leading natural philosophers, may have "virtually given birth to modern atomism".
Isaac Newton
Sir Isaac Newton (25 December 1642 – 20 March 1726/27) was an English polymath active as a mathematician, physicist, astronomer, alchemist, theologian, and author who was described in his time as a natural philosopher.
James Clerk Maxwell
James Clerk Maxwell (13 June 1831 – 5 November 1879) was a Scottish physicist with broad interests who was responsible for the classical theory of electromagnetic radiation, which was the first theory to describe electricity, magnetism and light as different manifestations of the same phenomenon.
See Force and James Clerk Maxwell
Josiah Willard Gibbs
Josiah Willard Gibbs (February 11, 1839 – April 28, 1903) was an American scientist who made significant theoretical contributions to physics, chemistry, and mathematics.
See Force and Josiah Willard Gibbs
Kepler's laws of planetary motion
In astronomy, Kepler's laws of planetary motion, published by Johannes Kepler between 1609 and 1619, describe the orbits of planets around the Sun.
See Force and Kepler's laws of planetary motion
Kilogram
The kilogram (also kilogramme) is the base unit of mass in the International System of Units (SI), having the unit symbol kg.
Kilogram-force
The kilogram-force (kgf or kgF), or kilopond (kp, from lit), is a non-standard gravitational metric unit of force.
Kinematics
Kinematics is a subfield of physics and mathematics, developed in classical mechanics, that describes the motion of points, bodies (objects), and systems of bodies (groups of objects) without considering the forces that cause them to move. Force and Kinematics are classical mechanics.
Kinetic energy
In physics, the kinetic energy of an object is the form of energy that it possesses due to its motion.
Kip (unit)
A kip is a US customary unit of force.
Lever
A lever is a simple machine consisting of a beam or rigid rod pivoted at a fixed hinge, or fulcrum.
See Force and Lever
Lift (force)
When a fluid flows around an object, the fluid exerts a force on the object. Force and Lift (force) are classical mechanics.
Light-year
A light-year, alternatively spelled light year (ly or lyr), is a unit of length used to express astronomical distances and is equal to exactly 9,460,730,472,580.8 km (Scientific notation: 9.4607304725808 × 1012 km), which is approximately 5.88 trillion mi.
Logic
Logic is the study of correct reasoning.
See Force and Logic
Lorentz factor
The Lorentz factor or Lorentz term (also known as the gamma factor) is a quantity that expresses how much the measurements of time, length, and other physical properties change for an object while that object is moving.
Lorentz force
In physics, specifically in electromagnetism, the Lorentz force law is the combination of electric and magnetic force on a point charge due to electromagnetic fields.
Magnetic field
A magnetic field (sometimes called B-field) is a physical field that describes the magnetic influence on moving electric charges, electric currents, and magnetic materials.
Magnetism
Magnetism is the class of physical attributes that occur through a magnetic field, which allows objects to attract or repel each other.
Magnitude (mathematics)
In mathematics, the magnitude or size of a mathematical object is a property which determines whether the object is larger or smaller than other objects of the same kind.
See Force and Magnitude (mathematics)
Mass
Mass is an intrinsic property of a body.
See Force and Mass
Maxwell's equations
Maxwell's equations, or Maxwell–Heaviside equations, are a set of coupled partial differential equations that, together with the Lorentz force law, form the foundation of classical electromagnetism, classical optics, electric and magnetic circuits.
See Force and Maxwell's equations
Measurement in quantum mechanics
In quantum physics, a measurement is the testing or manipulation of a physical system to yield a numerical result.
See Force and Measurement in quantum mechanics
Mechanical advantage
Mechanical advantage is a measure of the force amplification achieved by using a tool, mechanical device or machine system.
See Force and Mechanical advantage
Mechanical energy
In physical sciences, mechanical energy is the sum of potential energy and kinetic energy.
See Force and Mechanical energy
Mechanical equilibrium
In classical mechanics, a particle is in mechanical equilibrium if the net force on that particle is zero.
See Force and Mechanical equilibrium
Mercury (planet)
Mercury is the first planet from the Sun and the smallest in the Solar System.
See Force and Mercury (planet)
Meson
In particle physics, a meson is a type of hadronic subatomic particle composed of an equal number of quarks and antiquarks, usually one of each, bound together by the strong interaction.
See Force and Meson
Metre
The metre (or meter in US spelling; symbol: m) is the base unit of length in the International System of Units (SI).
See Force and Metre
Michael Faraday
Michael Faraday (22 September 1791 – 25 August 1867) was an English scientist who contributed to the study of electromagnetism and electrochemistry.
Microstate (statistical mechanics)
In statistical mechanics, a microstate is a specific configuration of a system that describes the precise positions and momenta of all the individual particles or components that make up the system.
See Force and Microstate (statistical mechanics)
MIT OpenCourseWare
MIT OpenCourseWare (MIT OCW) is an initiative of the Massachusetts Institute of Technology (MIT) to publish all of the educational materials from its undergraduate- and graduate-level courses online, freely and openly available to anyone, anywhere.
See Force and MIT OpenCourseWare
Modern physics
Modern physics is a branch of physics that developed in the early 20th century and onward or branches greatly influenced by early 20th century physics.
Moment of inertia
The moment of inertia, otherwise known as the mass moment of inertia, angular/rotational mass, second moment of mass, or most accurately, rotational inertia, of a rigid body is a quantity that determines the torque needed for a desired angular acceleration about a rotational axis, akin to how mass determines the force needed for a desired acceleration.
See Force and Moment of inertia
Momentum
In Newtonian mechanics, momentum (momenta or momentums; more specifically linear momentum or translational momentum) is the product of the mass and velocity of an object. Force and momentum are vector physical quantities.
Moon
The Moon is Earth's only natural satellite.
See Force and Moon
Neptune
Neptune is the eighth and farthest known planet from the Sun.
Net force
In mechanics, the net force is the sum of all the forces acting on an object.
Neutral current
Weak neutral current interactions are one of the ways in which subatomic particles can interact by means of the weak force.
Neutron
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Newton (unit)
The newton (symbol: N) is the unit of force in the International System of Units (SI).
Newton's law of universal gravitation
Newton's law of universal gravitation says that every particle attracts every other particle in the universe with a force that is proportional to the product of their masses and inversely proportional to the square of the distance between their centers.
See Force and Newton's law of universal gravitation
Newton's laws of motion
Newton's laws of motion are three physical laws that describe the relationship between the motion of an object and the forces acting on it. Force and Newton's laws of motion are classical mechanics.
See Force and Newton's laws of motion
Non-inertial reference frame
A non-inertial reference frame (also known as an accelerated reference frame) is a frame of reference that undergoes acceleration with respect to an inertial frame. Force and non-inertial reference frame are classical mechanics.
See Force and Non-inertial reference frame
Normal force
In mechanics, the normal force F_n is the component of a contact force that is perpendicular to the surface that an object contacts.
Nuclear force
The nuclear force (or nucleon–nucleon interaction, residual strong force, or, historically, strong nuclear force) is a force that acts between hadrons, most commonly observed between protons and neutrons of atoms.
Nucleon
In physics and chemistry, a nucleon is either a proton or a neutron, considered in its role as a component of an atomic nucleus.
Nutation
Nutation is a rocking, swaying, or nodding motion in the axis of rotation of a largely axially symmetric object, such as a gyroscope, planet, or bullet in flight, or as an intended behaviour of a mechanism.
Observation
Observation in the natural sciences is an act or instance of noticing or perceiving and the acquisition of information from a primary source.
Oliver Heaviside
Oliver Heaviside FRS (18 May 1850 – 3 February 1925) was an English self-taught mathematician and physicist who invented a new technique for solving differential equations (equivalent to the Laplace transform), independently developed vector calculus, and rewrote Maxwell's equations in the form commonly used today.
See Force and Oliver Heaviside
Open Yale Courses
Open Yale Courses is a project of Yale University to share full video and course materials from its undergraduate courses.
See Force and Open Yale Courses
OpenStax
OpenStax (formerly OpenStax College) is a nonprofit educational technology initiative based at Rice University.
Optics
Optics is the branch of physics that studies the behaviour and properties of light, including its interactions with matter and the construction of instruments that use or detect it.
See Force and Optics
Orbit
In celestial mechanics, an orbit (also known as orbital revolution) is the curved trajectory of an object such as the trajectory of a planet around a star, or of a natural satellite around a planet, or of an artificial satellite around an object or position in space such as a planet, moon, asteroid, or Lagrange point.
See Force and Orbit
Orientation (geometry)
In geometry, the orientation, attitude, bearing, direction, or angular position of an object – such as a line, plane or rigid body – is part of the description of how it is placed in the space it occupies.
See Force and Orientation (geometry)
Orthogonality
In mathematics, orthogonality is the generalization of the geometric notion of perpendicularity.
Parabola
In mathematics, a parabola is a plane curve which is mirror-symmetrical and is approximately U-shaped.
Parallel (geometry)
In geometry, parallel lines are coplanar infinite straight lines that do not intersect at any point.
See Force and Parallel (geometry)
Parallelogram law
In mathematics, the simplest form of the parallelogram law (also called the parallelogram identity) belongs to elementary geometry.
See Force and Parallelogram law
Particle physics
Particle physics or high-energy physics is the study of fundamental particles and forces that constitute matter and radiation.
See Force and Particle physics
Pauli exclusion principle
In quantum mechanics, the Pauli exclusion principle states that two or more identical particles with half-integer spins (i.e. fermions) cannot simultaneously occupy the same quantum state within a system that obeys the laws of quantum mechanics.
See Force and Pauli exclusion principle
Pergamon Press
Pergamon Press was an Oxford-based publishing house, founded by Paul Rosbaud and Robert Maxwell, that published scientific and medical books and journals.
Permittivity
In electromagnetism, the absolute permittivity, often simply called permittivity and denoted by the Greek letter (epsilon), is a measure of the electric polarizability of a dielectric material.
Perturbation theory
In mathematics and applied mathematics, perturbation theory comprises methods for finding an approximate solution to a problem, by starting from the exact solution of a related, simpler problem.
See Force and Perturbation theory
Philosophiæ Naturalis Principia Mathematica
Philosophiæ Naturalis Principia Mathematica (English: The Mathematical Principles of Natural Philosophy) often referred to as simply the Principia, is a book by Isaac Newton that expounds Newton's laws of motion and his law of universal gravitation.
See Force and Philosophiæ Naturalis Principia Mathematica
Philosophy
Philosophy ('love of wisdom' in Ancient Greek) is a systematic study of general and fundamental questions concerning topics like existence, reason, knowledge, value, mind, and language.
Physical object
In common usage and classical mechanics, a physical object or physical body (or simply an object or body) is a collection of matter within a defined contiguous boundary in three-dimensional space.
Physics (Aristotle)
The Physics (Greek: Φυσικὴ ἀκρόασις Phusike akroasis; Latin: Physica, or Naturales Auscultationes, possibly meaning "Lectures on nature") is a named text, written in ancient Greek, collated from a collection of surviving manuscripts known as the Corpus Aristotelicum, attributed to the 4th-century BC philosopher Aristotle.
See Force and Physics (Aristotle)
Pierre Gassendi
Pierre Gassendi (also Pierre Gassend, Petrus Gassendi, Petrus Gassendus; 22 January 1592 – 24 October 1655) was a French philosopher, Catholic priest, astronomer, and mathematician.
Planet
A planet is a large, rounded astronomical body that is generally required to be in orbit around a star, stellar remnant, or brown dwarf, and is not one itself.
See Force and Planet
Point particle
A point particle, ideal particle or point-like particle (often spelled pointlike particle) is an idealization of particles heavily used in physics. Force and point particle are classical mechanics.
Polar coordinate system
In mathematics, the polar coordinate system is a two-dimensional coordinate system in which each point on a plane is determined by a distance from a reference point and an angle from a reference direction.
See Force and Polar coordinate system
Position (geometry)
In geometry, a position or position vector, also known as location vector or radius vector, is a Euclidean vector that represents a point P in space.
See Force and Position (geometry)
Potential
Potential generally refers to a currently unrealized ability.
Potential energy
In physics, potential energy is the energy held by an object because of its position relative to other objects, stresses within itself, its electric charge, or other factors.
See Force and Potential energy
Pound (force)
The pound of force or pound-force (symbol: lbf, sometimes lbf) is a unit of force used in some systems of measurement, including English Engineering units and the foot–pound–second system.
Pound (mass)
The pound or pound-mass is a unit of mass used in both the British imperial and United States customary systems of measurement.
Poundal
The poundal (symbol: pdl) is a unit of force, introduced in 1877, that is part of the Absolute English system of units, which itself is a coherent subsystem of the foot–pound–second system.
Power (physics)
Power is the amount of energy transferred or converted per unit time. Force and Power (physics) are Temporal rates.
Precession
Precession is a change in the orientation of the rotational axis of a rotating body.
Prentice Hall
Prentice Hall was a major American educational publisher.
Pressure
Pressure (symbol: p or P) is the force applied perpendicular to the surface of an object per unit area over which that force is distributed.
Principle of relativity
In physics, the principle of relativity is the requirement that the equations describing the laws of physics have the same form in all admissible frames of reference.
See Force and Principle of relativity
Projectile
A projectile is an object that is propelled by the application of an external force and then moves freely under the influence of gravity and air resistance.
Proportionality (mathematics)
In mathematics, two sequences of numbers, often experimental data, are proportional or directly proportional if their corresponding elements have a constant ratio.
See Force and Proportionality (mathematics)
Proton
A proton is a stable subatomic particle, symbol, H+, or 1H+ with a positive electric charge of +1 e (elementary charge).
See Force and Proton
Pulley
A pulley is a wheel on an axle or shaft enabling a taut cable or belt passing over the wheel to move and change direction, or transfer power between itself and a shaft.
See Force and Pulley
Quantum chromodynamics
In theoretical physics, quantum chromodynamics (QCD) is the study of the strong interaction between quarks mediated by gluons.
See Force and Quantum chromodynamics
Quantum electrodynamics
In particle physics, quantum electrodynamics (QED) is the relativistic quantum field theory of electrodynamics.
See Force and Quantum electrodynamics
Quantum field theory
In theoretical physics, quantum field theory (QFT) is a theoretical framework that combines classical field theory, special relativity, and quantum mechanics.
See Force and Quantum field theory
Quantum mechanics
Quantum mechanics is a fundamental theory that describes the behavior of nature at and below the scale of atoms.
See Force and Quantum mechanics
Quark
A quark is a type of elementary particle and a fundamental constituent of matter.
See Force and Quark
Radioactive decay
Radioactive decay (also known as nuclear decay, radioactivity, radioactive disintegration, or nuclear disintegration) is the process by which an unstable atomic nucleus loses energy by radiation.
See Force and Radioactive decay
Radius
In classical geometry, a radius (radii or radiuses) of a circle or sphere is any of the line segments from its center to its perimeter, and in more modern usage, it is also their length.
See Force and Radius
Radius of curvature
In differential geometry, the radius of curvature,, is the reciprocal of the curvature.
See Force and Radius of curvature
Reaction (physics)
As described by the third of Newton's laws of motion of classical mechanics, all forces occur in pairs such that if one object exerts a force on another object, then the second object exerts an equal and opposite reaction force on the first. Force and reaction (physics) are classical mechanics.
See Force and Reaction (physics)
René Descartes
René Descartes (or;; 31 March 1596 – 11 February 1650) was a French philosopher, scientist, and mathematician, widely considered a seminal figure in the emergence of modern philosophy and science.
Rest frame
In special relativity, the rest frame of a particle is the frame of reference (a coordinate system attached to physical markers) in which the particle is at rest.
Reviews of Modern Physics
Reviews of Modern Physics (often abbreviated RMP) is a quarterly peer-reviewed scientific journal published by the American Physical Society.
See Force and Reviews of Modern Physics
Right angle
In geometry and trigonometry, a right angle is an angle of exactly 90 degrees or radians corresponding to a quarter turn.
Rigid body
In physics, a rigid body, also known as a rigid object, is a solid body in which deformation is zero or negligible.
Robert Hooke
Robert Hooke (18 July 16353 March 1703) was an English polymath who was active as a physicist ("natural philosopher"), astronomer, geologist, meteorologist and architect.
Rotation
Rotation or rotational motion is the circular movement of an object around a central line, known as axis of rotation. Force and rotation are classical mechanics.
Scalar (physics)
Scalars (or scalar quantities) are physical quantities that are unaffected by changes to a vector space basis (i.e., a coordinate system transformation).
See Force and Scalar (physics)
Scalar field
In mathematics and physics, a scalar field is a function associating a single number to every point in a space – possibly physical space.
Schrödinger equation
The Schrödinger equation is a partial differential equation that governs the wave function of a quantum-mechanical system.
See Force and Schrödinger equation
Second
The second (symbol: s) is the unit of time in the International System of Units (SI), historically defined as of a day – this factor derived from the division of the day first into 24 hours, then to 60 minutes and finally to 60 seconds each (24 × 60 × 60.
See Force and Second
Second law of thermodynamics
The second law of thermodynamics is a physical law based on universal empirical observation concerning heat and energy interconversions.
See Force and Second law of thermodynamics
Shear stress
Shear stress (often denoted by, Greek: tau) is the component of stress coplanar with a material cross section.
Simple machine
A simple machine is a mechanical device that changes the direction or magnitude of a force.
Slug (unit)
The slug is a derived unit of mass in a weight-based system of measures, most notably within the British Imperial measurement system and the United States customary measures system.
Space
Space is a three-dimensional continuum containing positions and directions.
See Force and Space
Special relativity
In physics, the special theory of relativity, or special relativity for short, is a scientific theory of the relationship between space and time.
See Force and Special relativity
Speed
In kinematics, the speed (commonly referred to as v) of an object is the magnitude of the change of its position over time or the magnitude of the change of its position per unit of time; it is thus a scalar quantity. Force and speed are Temporal rates.
See Force and Speed
Speed of light
The speed of light in vacuum, commonly denoted, is a universal physical constant that is exactly equal to). According to the special theory of relativity, is the upper limit for the speed at which conventional matter or energy (and thus any signal carrying information) can travel through space.
Spring (device)
A spring is a device consisting of an elastic but largely rigid material (typically metal) bent or molded into a form (especially a coil) that can return into shape after being compressed or extended.
Spring scale
A spring scale, spring balance or newton meter is a type of mechanical force gauge or weighing scale.
Stability of matter
In physics, stability of matter refers to the problem of showing rigorously that a large number of charged quantum particles can coexist and form macroscopic objects, like ordinary matter.
See Force and Stability of matter
Standard gravity
The standard acceleration of gravity or standard acceleration of free fall, often called simply standard gravity and denoted by or, is the nominal gravitational acceleration of an object in a vacuum near the surface of the Earth.
See Force and Standard gravity
Standard Model
The Standard Model of particle physics is the theory describing three of the four known fundamental forces (electromagnetic, weak and strong interactions – excluding gravity) in the universe and classifying all known elementary particles.
Statics
Statics is the branch of classical mechanics that is concerned with the analysis of force and torque acting on a physical system that does not experience an acceleration, but rather is in equilibrium with its environment. Force and Statics are classical mechanics.
Statistical mechanics
In physics, statistical mechanics is a mathematical framework that applies statistical methods and probability theory to large assemblies of microscopic entities.
See Force and Statistical mechanics
Strain (mechanics)
In mechanics, strain is defined as relative deformation, compared to a position configuration.
See Force and Strain (mechanics)
Stress (mechanics)
In continuum mechanics, stress is a physical quantity that describes forces present during deformation.
See Force and Stress (mechanics)
Strong interaction
In nuclear physics and particle physics, the strong interaction, also called the strong force or strong nuclear force, is a fundamental interaction that confines quarks into protons, neutrons, and other hadron particles.
See Force and Strong interaction
Subatomic particle
In physics, a subatomic particle is a particle smaller than an atom.
See Force and Subatomic particle
Superposition principle
The superposition principle, also known as superposition property, states that, for all linear systems, the net response caused by two or more stimuli is the sum of the responses that would have been caused by each stimulus individually.
See Force and Superposition principle
Symmetry
Symmetry in everyday life refers to a sense of harmonious and beautiful proportion and balance.
Symmetry (physics)
The symmetry of a physical system is a physical or mathematical feature of the system (observed or intrinsic) that is preserved or remains unchanged under some transformation.
See Force and Symmetry (physics)
Tension (physics)
Tension is the pulling or stretching force transmitted axially along an object such as a string, rope, chain, rod, truss member, or other object, so as to stretch or pull apart the object.
See Force and Tension (physics)
Tensor
In mathematics, a tensor is an algebraic object that describes a multilinear relationship between sets of algebraic objects related to a vector space.
See Force and Tensor
Test particle
In physical theories, a test particle, or test charge, is an idealized model of an object whose physical properties (usually mass, charge, or size) are assumed to be negligible except for the property being studied, which is considered to be insufficient to alter the behaviour of the rest of the system.
Tests of general relativity
Tests of general relativity serve to establish observational evidence for the theory of general relativity.
See Force and Tests of general relativity
Theory of impetus
The theory of impetus is an auxiliary or secondary theory of Aristotelian dynamics, put forth initially to explain projectile motion against gravity. Force and theory of impetus are classical mechanics.
See Force and Theory of impetus
Theory of relativity
The theory of relativity usually encompasses two interrelated physics theories by Albert Einstein: special relativity and general relativity, proposed and published in 1905 and 1915, respectively.
See Force and Theory of relativity
Time
Time is the continued sequence of existence and events that occurs in an apparently irreversible succession from the past, through the present, and into the future.
See Force and Time
Time derivative
A time derivative is a derivative of a function with respect to time, usually interpreted as the rate of change of the value of the function.
Ton-force
A ton-force is one of various units of force defined as the weight of one ton due to standard gravity.
Torque
In physics and mechanics, torque is the rotational analogue of linear force.
See Force and Torque
Torsion spring
A torsion spring is a spring that works by twisting its end along its axis; that is, a flexible elastic object that stores mechanical energy when it is twisted.
Trajectory
A trajectory or flight path is the path that an object with mass in motion follows through space as a function of time.
Uncertainty principle
The uncertainty principle, also known as Heisenberg's indeterminacy principle, is a fundamental concept in quantum mechanics.
See Force and Uncertainty principle
Unified field theory
In physics, a unified field theory (UFT) is a type of field theory that allows all that is usually thought of as fundamental forces and elementary particles to be written in terms of a pair of physical and virtual fields.
See Force and Unified field theory
Unit vector
In mathematics, a unit vector in a normed vector space is a vector (often a spatial vector) of length 1.
University of Guelph
The University of Guelph (abbreviated U of G) is a comprehensive public research university in Guelph, Ontario, Canada.
See Force and University of Guelph
University of Pennsylvania
The University of Pennsylvania, commonly referenced as Penn or UPenn, is a private Ivy League research university in Philadelphia, Pennsylvania, United States.
See Force and University of Pennsylvania
University of the Virgin Islands
The University of the Virgin Islands (or UVI) is a public historically black land-grant university in the United States Virgin Islands.
See Force and University of the Virgin Islands
University Physics
University Physics, informally known as the Sears & Zemansky, is the name of a two-volume physics textbook written by Hugh Young and Roger Freedman.
See Force and University Physics
Velocity
Velocity is the speed in combination with the direction of motion of an object. Force and Velocity are Temporal rates and vector physical quantities.
Vertex (graph theory)
In discrete mathematics, and more specifically in graph theory, a vertex (plural vertices) or node is the fundamental unit of which graphs are formed: an undirected graph consists of a set of vertices and a set of edges (unordered pairs of vertices), while a directed graph consists of a set of vertices and a set of arcs (ordered pairs of vertices).
See Force and Vertex (graph theory)
Virtual particle
A virtual particle is a theoretical transient particle that exhibits some of the characteristics of an ordinary particle, while having its existence limited by the uncertainty principle, which allows the virtual particles to spontaneously emerge from vacuum at short time and space ranges.
See Force and Virtual particle
Viscosity
The viscosity of a fluid is a measure of its resistance to deformation at a given rate.
Vulcan (hypothetical planet)
Vulcan was a theorized planet that some pre-20th century astronomers thought existed in an orbit between Mercury and the Sun.
See Force and Vulcan (hypothetical planet)
W and Z bosons
In particle physics, the W and Z bosons are vector bosons that are together known as the weak bosons or more generally as the intermediate vector bosons.
W. H. Freeman and Company
W.
See Force and W. H. Freeman and Company
Walter Noll
Walter Noll (January 7, 1925 June 6, 2017) was a mathematician, and Professor Emeritus at Carnegie Mellon University.
Wave
In physics, mathematics, engineering, and related fields, a wave is a propagating dynamic disturbance (change from equilibrium) of one or more quantities.
See Force and Wave
Weak interaction
In nuclear physics and particle physics, the weak interaction, also called the weak force, is one of the four known fundamental interactions, with the others being electromagnetism, the strong interaction, and gravitation.
See Force and Weak interaction
Weighing scale
A scale or balance is a device used to measure weight or mass.
Wolters Kluwer
Wolters Kluwer N.V. is a Dutch information services company.
Work (physics)
In science, work is the energy transferred to or from an object via the application of force along a displacement.
World line
The world line (or worldline) of an object is the path that an object traces in 4-dimensional spacetime.
See also
Vector physical quantities
- Absement
- Acceleration
- Displacement (geometry)
- Displacement field (mechanics)
- Flow velocity
- Force
- Fourth, fifth, and sixth derivatives of position
- Impulse (physics)
- Jerk (physics)
- Magnetic vector potential
- Momentum
- Position
- Surface gradient
- Vector potential
- Velocity
- Wave vector
References
Also known as Attractive (force), Elastic force, Force (physcis), Force (physics), Force vector, Forces, Mechanical force, Multi-force, Multiforce, Nonconservative Force, Physical force, Pull (physics), Shake (physics), Snatch (physics), Tug (physics), Unit of force, Yank (physics).
, Diagonal, Displacement field (mechanics), Drag (physics), Dynamic pressure, Dyne, Earth, Ehrenfest theorem, Elasticity (physics), Electric charge, Electric current, Electric field, Electromagnetic spectrum, Electromagnetism, Electron, Electron degeneracy pressure, Electroweak interaction, Energy, English units, Entropy, Ernst Mach, Euclidean vector, European Journal of Physics, Expectation value (quantum mechanics), External ballistics, Fermion, Feynman diagram, Flight, Fluid, Fluid mechanics, Foot–pound–second system of units, Foundations of Science, Four-acceleration, Four-force, Four-momentum, Four-vector, Frame of reference, Free body diagram, Free fall, Friction, Fundamental interaction, Galilean invariance, Galileo Galilei, Gauge boson, General relativity, Geodesic, Gluon, Gottfried Wilhelm Leibniz, Gradient, Gravitational acceleration, Gravitational constant, Gravitational field, Gravitational metric system, Gravity, Hadron, Henry Cavendish, Hooke's law, I. Bernard Cohen, Impulse (physics), Inertia, Inertial frame of reference, Integral, Internal energy, International System of Units, Internet Archive, Invariant mass, Inverse-square law, Isaac Beeckman, Isaac Newton, James Clerk Maxwell, Josiah Willard Gibbs, Kepler's laws of planetary motion, Kilogram, Kilogram-force, Kinematics, Kinetic energy, Kip (unit), Lever, Lift (force), Light-year, Logic, Lorentz factor, Lorentz force, Magnetic field, Magnetism, Magnitude (mathematics), Mass, Maxwell's equations, Measurement in quantum mechanics, Mechanical advantage, Mechanical energy, Mechanical equilibrium, Mercury (planet), Meson, Metre, Michael Faraday, Microstate (statistical mechanics), MIT OpenCourseWare, Modern physics, Moment of inertia, Momentum, Moon, Neptune, Net force, Neutral current, Neutron, Newton (unit), Newton's law of universal gravitation, Newton's laws of motion, Non-inertial reference frame, Normal force, Nuclear force, Nucleon, Nutation, Observation, Oliver Heaviside, Open Yale Courses, OpenStax, Optics, Orbit, Orientation (geometry), Orthogonality, Parabola, Parallel (geometry), Parallelogram law, Particle physics, Pauli exclusion principle, Pergamon Press, Permittivity, Perturbation theory, Philosophiæ Naturalis Principia Mathematica, Philosophy, Physical object, Physics (Aristotle), Pierre Gassendi, Planet, Point particle, Polar coordinate system, Position (geometry), Potential, Potential energy, Pound (force), Pound (mass), Poundal, Power (physics), Precession, Prentice Hall, Pressure, Principle of relativity, Projectile, Proportionality (mathematics), Proton, Pulley, Quantum chromodynamics, Quantum electrodynamics, Quantum field theory, Quantum mechanics, Quark, Radioactive decay, Radius, Radius of curvature, Reaction (physics), René Descartes, Rest frame, Reviews of Modern Physics, Right angle, Rigid body, Robert Hooke, Rotation, Scalar (physics), Scalar field, Schrödinger equation, Second, Second law of thermodynamics, Shear stress, Simple machine, Slug (unit), Space, Special relativity, Speed, Speed of light, Spring (device), Spring scale, Stability of matter, Standard gravity, Standard Model, Statics, Statistical mechanics, Strain (mechanics), Stress (mechanics), Strong interaction, Subatomic particle, Superposition principle, Symmetry, Symmetry (physics), Tension (physics), Tensor, Test particle, Tests of general relativity, Theory of impetus, Theory of relativity, Time, Time derivative, Ton-force, Torque, Torsion spring, Trajectory, Uncertainty principle, Unified field theory, Unit vector, University of Guelph, University of Pennsylvania, University of the Virgin Islands, University Physics, Velocity, Vertex (graph theory), Virtual particle, Viscosity, Vulcan (hypothetical planet), W and Z bosons, W. H. Freeman and Company, Walter Noll, Wave, Weak interaction, Weighing scale, Wolters Kluwer, Work (physics), World line.