Field-emission display, an example of a matrix-addressed display. Each pixel is addressed in an X-Y matrix. In the case of a color display, each pixel is subdivided into a red, a blue, and a green subpixel.
Spin wave in a linear ferromagnetic array of precessing atomic spins of equal magnitude, represented as arrows (vectors) in perspective. The axis of precession is along the vertical direction of the total magnetization, M.