Clock: RELOX = presented, worn, exhibited, modern, Act. Term origin Arabic that it can be translated as timely, current, present the latest. Artifice in a visible place, which equipped with a mobile signal determines the current time within the zones. Sundials, which projected shade from a mast called Meridian on a Board stated in degrees were originally constructed.Then appear the water clocks, consisting of the intercommunication of two glass funnels, who passed by gravity sand or water by drops through a common cone. Mechanical watches, above the electric clock and the electronic pointed to the current time with bolts rotating, to refine the way to do it with light signals on a digital Board equipped with memory and systematic encouragement.