Medicare Eligibility. Do you have questions about what it takes to be eligible for Medicare? In this article, weâll outline the Medicare eligibility requirements so that you can enroll in the Medicare program, which is overseen by the Centers for Medicare & Medicaid Services (CMS) via Medicare.gov.
The first compass was invented around 247 B.C. in China and by the eleventh century it was used for navigation.In medieval Europe around 1300 the dry compass was invented and was replaced by the liquid filled magnetic compass in the early twentieth century.A compass is a navigational instrument which is used for determining the direction related to the Earthâs magnetic poles.n medieval Europe around 1300 the dry compass was invented and was replaced by the liquid filled magnetic compass in the early twentieth century. A compass is a navigational instrument which is used for determining the direction related to the Earthâs magnetic poles.
Used in Ancient China as early as the Qin dynasty (221 BCE â 207 BCE) or before, Chinese compasses were invented for more than just helping people find their way when traveling. Compasses were originally developed for aligning buildings with directions (north, south, east or west), and as a tool used in fortune telling.ne of the first recordings of using a compass for navigation was during the Northern Song dynasty (960 CE â 1126 CE). These compasses were made by floating a magnetized needle in water.