In the Introduction to Aerial Photography, we discussed the basic concept of aerial photography along with its characteristics, advantages and uses. However, aerial photographs are of various types. Different types of photographs have different merits and demerits. Hence, a researcher must know the various types of aerial photography to be able to use aerial photos according … Read more
Aerial photography is the science and technology of capturing photos of the land surface from air. The product of aerial photography is an aerial photograph which refers to a large scale photo captured from a camera attached to any flying machine. The flying machine may be a helicopter, aeroplane, drone, etc. There are many Uses … Read more
Scale of aerial photography refers to the proportion of distance between two points on the aerial photograph and the distance between the same points on the ground. It is necessary to know the scale of an aerial photograph for the interpretation and photogrammetry. There are three scenarios where we need to calculate the scale. We … Read more
Aerial photography is the science and technology of capturing photos of the land surface from any flying object such as airplane, helicopter, drone etc. Gaspar Felix Tournachon was first first person to capture an aerial photograph in 1858 from an air balloon. However, Talbert Abrams is known as the father of Aerial Photography. He was … Read more
Alfred Weber, a pioneer of locational analysis in Geography, introduced the Theory of Industrial Location in 1909. Weber combined economic parameters with spatial parameters to arrive at a profitable location for industries. It is also known as Least Cost Theory because this theory tries to find a location of least cost for an industrial location. … Read more
Alfred Weber is considered one of the pioneers of locational analysis in Geography. He gave his theory of industrial location in 1909. Weber’s theory of industrial location is a beautiful example of combining economic parameters with spatial parameters to arrive at a profitable location for industries. It is also known as Least Cost Theory because … Read more
Every student in the world learns about latitude and longitude in their primary schools and think that these are permanent lines on the earth’s surface. Even adults do not fully understand the meaning and the uses of latitude and longitude. Therefore, we will try to understand the concept and definition of latitude and longitude in … Read more
In the 1950s, Geographers and Demographers were increasingly attracted to methods of positivist sciences such as physics and mathematics. Therefore, they used different theories and models of these sciences in their own field to gain validation from the scientific community. This paradigm in social sciences is known as quantitative revolution. The Gravity Model of Migration … Read more
Samuel A. Stouffer gave the theory of intervening opportunities in his work “Intervening Opportunities: A Theory Relating Mobility and Distance” in 1940. This theory shows that the nature of geographic space is more important than the distance in determining migration behavior. According to Ravenstein’s Laws, distance is the most important factor in determining the migration … Read more
Everett S. Lee’s Theory of Migration (1966) or Intervening Obstacles Model aimed to eliminate the shortcomings of the previous theories of migration by inculcating both opportunities and problems as factors of migration. Previously, most of the studies focused on making general unidimensional laws to explain migration e.g. Ravenstein’s Laws of Migration. However, none of these … Read more