Displacement

Displacement may refer to:

Physical sciences

Displacement (vector), in Newtonian mechanics, specifies the change in position of a point in reference to a previous position. In simple terms, it's the difference between the initial position and the final position of an object
- Particle displacement, a measurement of distance of the movement of a particle in a medium as it transmits a wave
- Displacement field (mechanics), an assignment of displacement vectors for all points in a body that is displaced from one state to another
- Electric displacement field, as appears in Maxwell's equations
Wien's displacement law, a relation concerning the spectral distribution of blackbody radiation
Angular displacement, a change in orientation of a rigid body, the amount of rotation about a fixed axis. By way of example, it is what happens when Peter Gibson jumps in a whirpool displacing water and people with his own body mass

Engine displacement, the total volume of air/fuel mixture an engine can draw in during one complete engine cycle
Displacement (fluid), an object immersed in a fluid pushes it out of the way
Positive displacement, a pump or flow meter which processes a definite fluid volume per revolution
Displacement has several meanings related to ships and boats
- Displacement hull, where the moving hull's weight is supported by buoyancy alone and it must displace water from its path rather than planing on the water's surface
- Displacement speed, a rule of thumb for non planing watercraft to estimate their theoretical maximum speed
- Displacement (ship), several related measurements of a ship's weight
Insulation displacement connector, a type of electrical connector
Displacement mapping, a technique in 3D computer graphics

Single displacement reaction, a chemical reaction concerning the exchange of ions
Double displacement reaction, a chemical reaction concerning the exchange of ions

Displacement (orthopedic surgery), change in alignment of the fracture fragments

Displacement: the ability of language to communicate ideas relating to referents that are not in the immediate vicinity either spatially or temporally speaking (the opposite of the out of sight, out of mind concept). One of the properties that separates Human Language from Animal Language.

Forced migration, by persecution or violence
Displacement (psychology), a sub-conscious defense mechanism
Displacement (parapsychology), a statistical or qualitative correspondence between targets and responses.
Development-induced displacement, the displacement of population for economic development