The standard operating procedure or SOP is a
written safety and health measures for hazardous tasks. It is a detailed
instructions or step-by-step directions for conducting a specific procedure especially when dealing with
chemicals that may cause injury. Moreover, because of these SOP’s accident and
untoward circumstances in the workplace can be avoided.
There were two approaches for the planetary paths. The idea about the planets revolving around the Earth, the planetary paths were plotted and were erratic. It was not relevant to the laws of motion and gravity. That fact was neglected by the believers in an Earth-centered Solar System.
Sun-centered Solar System was theorized by Copernicus. The paths assumed to be relatively circular (or elliptical).
