Construct validity refers to validity of the ideas and concepts used in the research. Constructs are âconceptsâ and âideasâ. This particular validity is often problematic and not clear cut. There is a subjective (interpretive) element in it that makes it somewhat debatable.
The divergence of scale at the poles is a major weakness of the Mercator projection, rendering it unsuitable at high latitudes. Login or Sign Up to answer this question. data-config-site-section=chacha>. What is a Mercator projection A Mercator projection is a mathematical method of showing a map of the globe on a...
A modern rendering by John Snyder of the double-cordiform projection used for Mercator's 1538 world map. Reduced slightly from Snyder, Flattening the Earth, 37, fig. 1.27. Mercatorâs next publication was a detailed 34 by 46 inch (87 by 117 cm) map of Flanders, printed as four sheets in 1540. complete history of the Mercator projection, it includes the down-and-dirty details of the flap that Arno Peters created with his misguided egotism and fringe ideas in the cartographic world.â¦This book might accomplish the impossible: actually get the interested layman to understand the basics of map projections.