Differentiate between homolographic and orthographic projections
Homolographic Projection is a projection in which the network of latitudes and longitudes is developed in such a way that every graticule on the map is equal in area to the corresponding graticule on the globe. It is also known as the equal-area projection. In this projection, areas of various parts of the earth are represented correctly.
Orthographic Projection is a projection drawn when the source of light is placed at infinity from the globe, opposite to the point at which the plane surface touches the globe. It is classified on the basis of the location of the source of light, along with gnomonic and stereographic projections.
Explanation
The question asks to differentiate between homolographic and orthographic projections. From the textbook context: Homolographic projection is based on global properties - it preserves equal area and is also called equal-area projection. Orthographic projection is based on the source of light position - it is drawn when the light source is placed at infinity from the globe. These two projections are classified on different bases: homolographic is based on preservation of area (global property), while orthographic is based on the position of the light source (perspective projection).