DPI most generally refers to Dots Per Inch, a term applied to printing resolution. Specifically, it identifies the number of dots a printer can place on a page in one inch. Higher DPI means more detail and definition in a printed page. A related term, PPI, or Pixels Per Inch, is applied to video screens.
The longitude specifies the location's distance east or west from an imaginary line connecting the North and South Poles, called the Prime Meridian. Latitude and longitude are used together to specify the geographical coordinates of a location on Earth.
â¢ The longitude lines are all parallel lines to the Prime Meridian. â¢ All latitude lines are parallel to the Equator. â¢ The latitude lines are denoted by âphiâ where as the longitude lines are denoted by âlambdaâ. â¢ The climate and the weather of a particular region are determined by the latitude.n short, it can be said that the longitude of a place is the distance from the Prime Meridian. The time difference can also be thus calculated. In fact, the time difference is calculated with the Greenwich Mean Time as the base.