A magnetic cell includes a ferromagnetic free layer having a free magnetization orientation direction and a first ferromagnetic pinned reference layer having a first reference magnetization orientation direction that is parallel or anti-parallel to the free magnetization orientation direction. The conveyor component includes an inner race and an outer race. The valve body is biased by a biasing member such as a spring in a direction to close the fluid passage. Each continuum of image data can include a ribbon of data representing the geographic area.