Force per area, parallel layers.

Stress causing layers to slide.

Deformation per unit original dimension.

Removing wool from sheep annually.

Sir George Albert Shearing (13 August 191914 February 2011) was a British jazz pianist who for many years led a popular jazz group that recorded for Discovery Records, MGM Records and Capitol Records.

Building for cutting sheep wool.

Cuts materials using sharp blades.

The shearing interferometer is an extremely simple means to observe interference and to use this phenomenon to test the collimation of light beams, especially from laser sources which have a coherence length which is usually significantly longer than the thickness of the shear plate (see graphics) so that the basic condition for interference is fulfilled.