A shear stress, denoted Ï (Greek: tau), is defined as the component of stress coplanar with a material cross section. Shear stress arises from the force vector component parallel to the cross section. Normal stress, on the other hand, arises from the force vector component perpendicular to the material cross section on which it acts.
Life OK is a Hindi language Indian cable and satellite television channel based in India. The channel launched on 18 December 2011, and is distributed in many parts of the world.
In Italy, the Discovery Channel (and HD) is distributed via satellite by Sky Italia as part of the documentary pack. In addition, Italy has four Discovery-branded channels: Discovery Science, Discovery Real Time, Discovery Animal Planet and Discovery Travel and Living.