A map projection is defined as "a geometric transformation of the spherical or ellipsodic surface of the Earth onto a flat map surface." Although much has been written about these projections, people still find this topic to be one of the most controversial aspects of card use. Many professionals admit that they don't completely understand map projections. This shortcoming can unfortunately have consequences. First, it hinders their ability to understand international relations in global society. Second, it can become easy prey for politicians, advertisers, and others who don't understand or use map projections in misleading ways. There are an infinite number of map projections, and each is best suited for a particular purpose. The question then arises of how to distinguish them from one another. Two approaches are commonly used to classify projections into different families based on their geometric distortion properties, based on shape, area and direction. Also examine the nature of the surface used to make the projection, whether it is a cone, a plane or a cylinder. These two approaches go hand in hand with the spatial properties preserved, as well as the pattern and level of distortion. The two projections that will be compared in this test will be a cylindrical projection (Mercator) and a conical projection (Lambers equal area). ).The first projection that will be analyzed will be the cylindrical projection, dealing specifically with the Mercator projection. The most common to project accurately is the equtrial area, and often the only real useful aspect of all cylindrical projections. All coordinate lines are straight parallels. Crossed meridians are always at right angles...... middle of paper ......r British Columbia and they are also used by the United States Geological Survey or USGS and the United States Census Bureau. Coordinates from a spherical datum can be transformed into a conic projection of equal area of ​​Albers with coordinates coming from the following formulas: where λ is the longitude, λ0 is the reference longitude, φ is the latitude, φ0 is the reference latitude and φ1 and φ2 are the standard parallels. Comparing Mercator and Albers projections for equal area is a bit like comparing apples to oranges. They are both good at describing a region of the Earth; However, neither is good at displaying the entire globe. The problem with modern society is that the mental map, thanks to uneducated citizens, is that of Mercator. Many people have an incorrect view of the mapped world. Hopefully with a more informed public this can change for the better.