Declining estrogen levels can trigger severe pain in the lower lumbar region. The lower back pain due to estrogen deficiency can best be described as excruciating pain which radiates down the buttocks and legs. The incapacitating lower back pain may also hamper every day tasks.
A Position vector is a vector that describes position of a point in space. Often the position of such a point is nothing but the x,y, and z coordinates of the point with origin as the reference point. The direction of such a vector is the arrow or...
i.e., while the position vector itself is not a tensor, the difference between any two position. vectors is a tensor of rank 1! Similarly, for any position vectors V and V*, dV = dV*; i.e., the. differential of the position vector is a tensor of rank 1. This result may seem a little strange, but it provides strong motivation for exercising care in. working with physical vector quantities.