## Displacement field (mechanics)

A **displacement** field is an assignment of **displacement** vectors for all points in a region or body that is displaced from one state to another. A **displacement** vector specifies the position of a point or a particle in reference to an origin or to a previous position. For example, a **displacement**

**wikipedia.org**| 2010/9/25 19:31:54

## Continuum mechanics

information about the particular material studied is added through a constitutive relation . Continuum **mechanics** deals with physical properties of solids and fluids which are independent of any particular coordinate system in which they are observed. These physical properties are then represented

**wikipedia.org**| 2011/10/1 6:28:32

## Heisenberg's entryway to matrix mechanics

For more context, see Introduction to quantum **mechanics** . For complete information on the specific topic in quantum physics, see Matrix **mechanics** . An electron falling from energy state 3 to energy state 2 emits one red photon. But what will be the intensity of radiation in the spectrum

**wikipedia.org**| 2010/9/25 6:59:37

## Lagrangian mechanics

In Lagrangian **mechanics** , the trajectory of a system of particles is derived by solving the Lagrange equations in one of two forms, either the Lagrange equations of the first kind , [ 1 ] which treat constraints explicitly as extra equations, often using Lagrange multipliers ; [ 2 ] [ 3 ]

**wikipedia.org**| 2011/5/10 11:29:09

## Deformation (mechanics)

temperature changes within the body. Strain is a description of deformation in terms of relative **displacement** of particles in the body. Different equivalent choices may be made for the expression of a strain field depending on whether it is defined in the initial or in the final placement

**wikipedia.org**| 2011/7/1 1:13:45