A tremor, or shaking, usually begins in a limb, often your hand or fingers. You may notice a back-and-forth rubbing of your thumb and forefinger, known as a pill-rolling tremor. One characteristic of Parkinson's disease is a tremor of your hand when it is relaxed (at rest). Slowed movement (bradykinesia).
The vertical bar is often called a ' pipe '. It is often used in mathematics, logic and statistics. It typically is read as 'given that'. In probability and statistics it often indicates conditional probability, but can also indicate a conditional distribution. You can read it as 'conditional on'.
Best Answer: Horizontal and vertical are simply directions relative to some reference frame. Typically the reference frame in HS and early college physics is Earth's surface.In which case horizontal means parallel to Earth's surface and vertical means perpendicular to Earth's surface.In advanced math and physics, the terms horizontal and vertical will be replaced by unit vectors i, j, and k; where i dot i = 1 etc.nd Ay = A, which means the A vector is pointing straight up the vertical axis. In this case, there is no Ax component. In higher trig you will learn about transformations where we rotate the axes some degrees with the result sometimes of simplifying an otherwise difficult problem.