Mechanics
Motion, forces, energy and physical systems.
Areas within Mechanics
Mechanics
Motion, forces, energy and physical systems.
157 wordsThermodynamics
Heat, energy transfer, work and entropy.
64 wordsElectromagnetism
Electric charge, fields, circuits and magnetism.
62 wordsQuantum physics
Matter and energy at atomic and subatomic scales.
44 wordsRelativity
Space, time, gravity and motion at extreme scales.
31 wordsOptics
Light, lenses, reflection, refraction and imaging.
40 wordsAcoustics
Sound, vibration, waves and hearing.
1 wordsAstrophysics
Specialist vocabulary classified under Physics.
169 wordsCondensed matter
Specialist vocabulary classified under Physics.
40 wordsFluid dynamics
Specialist vocabulary classified under Physics.
66 wordsNuclear physics
Specialist vocabulary classified under Physics.
36 wordsParticle physics
Specialist vocabulary classified under Physics.
72 wordsPhysical measurement
Specialist vocabulary classified under Physics.
31 wordsWaves acoustics
Specialist vocabulary classified under Physics.
34 words120 featured terms
The database can contain more terms than shown here; this page prioritises the strongest mappings.
(physics) the rate of doing work; measured in watts (= joules/second)
Angular accelerationnoun(physics) the rate of change of the angular velocity of a rotating body
Angular velocitynoun(physics) the rate of change of the angular position of a rotating body; usually expressed in radians per second or radians per minute
Center of massnounpoint representing the mean position of the matter in a body
Centre of massnounpoint representing the mean position of the matter in a body
K.E.nounthe mechanical energy that a body has by virtue of its motion
kinetic energynounthe mechanical energy that a body has by virtue of its motion
P.E.nounthe mechanical energy that a body has by virtue of its position; stored energy
potential energynounthe mechanical energy that a body has by virtue of its position; stored energy
Torquenouna twisting force
Torsionnouna twisting force
Accelerationnoun(physics) a rate of increase of velocity
Energynoun(physics) a thermodynamic quantity equivalent to the capacity of a physical system to do work; the units of energy are joules or ergs; "energy c…
Forcenoun(physics) the influence that produces a change in a physical quantity; "force equals mass times acceleration"
Free energynoun(physics) a thermodynamic quantity equivalent to the capacity of a physical system to do work; the units of energy are joules or ergs; "energy c…
Gravitationnoun(physics) the force of attraction between all masses in the universe; especially the attraction of the earth's mass for bodies near its surface;…
Gravitational attractionnoun(physics) the force of attraction between all masses in the universe; especially the attraction of the earth's mass for bodies near its surface;…
Gravitational forcenoun(physics) the force of attraction between all masses in the universe; especially the attraction of the earth's mass for bodies near its surface;…
Gravitynoun(physics) the force of attraction between all masses in the universe; especially the attraction of the earth's mass for bodies near its surface;…
Inertianoun(physics) the tendency of a body to maintain its state of rest or uniform motion unless acted upon by an external force
Worknoun(physics) a manifestation of energy; the transfer of energy from one physical system to another expressed as the product of a force and the dist…
conservation lawnounA rule that a quantity such as energy or momentum is not lost in a closed system.
kinetic energynounEnergy an object has because it is moving.
potential energynounStored energy associated with position or arrangement.
Electric powernounthe product of voltage and current
Electrical powernounthe product of voltage and current
Mechanical powernounthe time derivative of work.
Waterpowernounthe power to do work that is latent in a head of water
Wattagenounthe product of voltage and current
Barycenternoun(astronomy) the common center of mass around which two or more bodies revolve
Center of buoyancynoun(physics) the center of mass of the immersed part of ship or other floating object
Center of immersionnoun(physics) the center of mass of the immersed part of ship or other floating object
Centre of buoyancynoun(physics) the center of mass of the immersed part of ship or other floating object
Centre of immersionnoun(physics) the center of mass of the immersed part of ship or other floating object
Centroidnounthe center of mass of an object of uniform density
Elastic energynounpotential energy that is stored when a body is deformed (as in a coiled spring)
Elastic potential energynounpotential energy that is stored when a body is deformed (as in a coiled spring)
Magnetic energynoun(physics) the potential energy of a magnetic field.
Magnetic momentnounthe torque exerted on a magnet or dipole when it is placed in a magnetic field
Moment of a magnetnounthe torque exerted on a magnet or dipole when it is placed in a magnetic field
Weightnounthe vertical force exerted by a mass as a result of gravity
Impulsenounan impelling force or strength; "the car's momentum carried it off the road"
Momentnouna turning force produced by an object acting at a distance (or a measure of that force)
Momentumnounan impelling force or strength; "the car's momentum carried it off the road"
Speednoundistance travelled per unit time
Velocitynoundistance travelled per unit time
activation energynounthe energy that an atomic system must acquire before a process (such as an emission or reaction) can occur; "catalysts are said to reduce the en…
Aerodynamic forcenounforces acting on airfoils in motion relative to the air (or other gaseous fluids)
Affinitynounthe force attracting atoms to each other and binding them together in a molecule; "basic dyes have an affinity for wool and silk"
Alternative energynounenergy derived from sources that do not use up natural resources or harm the environment
Atomic energynounthe energy released by a nuclear reaction
Attractionnounthe force by which one object attracts another
Attractive forcenounthe force by which one object attracts another
Binding energynounthe energy required to separate particles from a molecule or atom or nucleus; equals the mass defect
Centrifugal forcenounthe outward force on a body moving in a curved path around another body
Centripetal accelerationnounthe acceleration toward the center that holds a satellite in elliptical orbit
Centripetal forcenounthe inward force on a body moving in a curved path around another body
Chemical attractionnounthe force attracting atoms to each other and binding them together in a molecule; "basic dyes have an affinity for wool and silk"
Chemical energynounthat part of the energy in a substance that can be released by a chemical reaction
Cohesionnoun(physics) the intermolecular force that holds together the molecules in a solid or liquid
Constant accelerationnouna type of motion in which the velocity of an object changes by an equal amount in every equal time period.; "In this case, the constant accelera…
Coriolis forcenoun(physics) a force due to the earth's rotation; acts on a body in motion (airplane or projectile) in a rotating reference frame; in a rotating fr…
Dissociation energynounthe energy needed to break every chemical bond in a molecule and completely separate all its atoms.
Driftnouna force that moves something along
Elan vitalnoun(biology) a hypothetical force (not physical or chemical) once thought by Henri Bergson to cause the evolution and development of organisms
Electric energynoun(physics) the potential energy of an electric charge in an electric field, or of an electric current in a magnetic field.
Electrical energynounenergy made available by the flow of electric charge through a conductor; "they built a car that runs on electricity"; "The power went out aroun…
Electricitynounenergy made available by the flow of electric charge through a conductor; "they built a car that runs on electricity"; "The power went out aroun…
Energy levelnouna definite stable energy that a physical system can have; used especially of the state of electrons in atoms or molecules; "according to quantum…
Energy of activationnounthe energy that an atomic system must acquire before a process (such as an emission or reaction) can occur; "catalysts are said to reduce the en…
Energy statenouna definite stable energy that a physical system can have; used especially of the state of electrons in atoms or molecules; "according to quantum…
Exchange energynounthe energy involved in the exchange interaction.; "Exchange energy splittings are very elusive to calculate for molecular systems at large inter…
Heatnouna form of energy that is transferred by a difference in temperature
Heat energynouna form of energy that is transferred by a difference in temperature
Impetusnouna force that moves something along
Impulsionnouna force that moves something along
Life forcenoun(biology) a hypothetical force (not physical or chemical) once thought by Henri Bergson to cause the evolution and development of organisms
Lorentz forcenounthe force experienced by a point charge moving along a wire that is in a magnetic field; the force is at right angles to both the current and th…
Magnetomotive forcenounthe force that produces magnetic flux
Mechanical energynounenergy in a mechanical form
Moment of inertianounthe tendency of a body to resist angular acceleration
Nuclear energynounthe energy released by a nuclear reaction
Powernounenergy made available by the flow of electric charge through a conductor; "they built a car that runs on electricity"; "The power went out aroun…
Propulsionnouna propelling force
Pullnounthe force used in pulling; "the pull of the moon"; "the pull of the current"
Pushnounthe force used in pushing; "the push of the water on the walls of the tank"; "the thrust of the jet engines"
Radiant energynounenergy that is transmitted in the form of (electromagnetic) radiation; energy that exists in the absence of matter
Radiationnounenergy that is radiated or transmitted in the form of rays or waves or particles
Reactionnoun(mechanics) the equal and opposite force that is produced when any force is applied to a body; "every action has an equal and opposite reaction"
Repulsionnounthe force by which bodies repel one another
Repulsive forcenounthe force by which bodies repel one another
Rest energynounthe energy equivalent to the mass of a particle at rest in an inertial frame of reference; equal to the rest mass times the square of the speed…
Separation energynounthe energy required to separate particles from a molecule or atom or nucleus; equals the mass defect
Solar gravitynounthe gravity of the sun; "solar gravity creates extreme pressures and temperatures"
Stressnoun(physics) force that produces strain on a physical body; "the intensity of stress is expressed in units of force divided by units of area"
Thrustnounthe force used in pushing; "the push of the water on the walls of the tank"; "the thrust of the jet engines"
Uniform accelerationnouna type of motion in which the velocity of an object changes by an equal amount in every equal time period.; "In this case, the constant accelera…
Vital forcenoun(biology) a hypothetical force (not physical or chemical) once thought by Henri Bergson to cause the evolution and development of organisms
Vitalitynoun(biology) a hypothetical force (not physical or chemical) once thought by Henri Bergson to cause the evolution and development of organisms
Loadnounthe power output of a generator or power plant
Heavinessnounthe property of being comparatively great in weight; "the heaviness of lead"
Lightnessnounthe property of being comparatively small in weight; "the lightness of balsa wood"
Poundagenounweight expressed in pounds
Tarenounthe weight of a motor vehicle, railroad car, or aircraft without its fuel or cargo
Weightinessnounthe property of being comparatively great in weight; "the heaviness of lead"
Light speednounthe speed at which light travels in a vacuum; the constancy and universality of the speed of light is recognized by defining it to be exactly 29…
Speed of lightnounthe speed at which light travels in a vacuum; the constancy and universality of the speed of light is recognized by defining it to be exactly 29…
Steeragewaynoun(nautical) the minimum rate of motion needed for a vessel to be maneuvered
ACnounan electric current that reverses direction sinusoidally; "In the US most household current is AC at 60 cycles per second"
Affinitynoun(immunology) the attraction between an antigen and an antibody
Alternating currentnounan electric current that reverses direction sinusoidally; "In the US most household current is AC at 60 cycles per second"
Alternating electric currentnounan electric current that reverses direction sinusoidally; "In the US most household current is AC at 60 cycles per second"
Bondnounan electrical force linking atoms
Breaking pointnounthe degree of tension or stress at which something breaks
DCnounan electric current that flows in one direction steadily
Direct currentnounan electric current that flows in one direction steadily
Direct electric currentnounan electric current that flows in one direction steadily
Heat of transformationnounheat absorbed or radiated during a change of phase at a constant temperature and pressure
Latent heatnounheat absorbed or radiated during a change of phase at a constant temperature and pressure
Liftnounthe component of the aerodynamic forces acting on an airfoil that opposes gravity
