What does QC mean in topography

Difference between topology and topography | Topology vs topography 2021

- topology vs. topography

Topology and topography are two words that are often misused by many English speakers. Although these two words sound similar, they have very different meanings. Topology deals with the geometric properties and spatial relationships that are unaffected by the constant change in shape or size of figures. Topography deals with the arrangement of the natural and man-made physical features of an area. The Main difference between topology and topography is that Topology is a field in mathematics while topography is a field in geography.

What is topology?

Topology is a branch of mathematics that deals with the properties of space that are unaffected by elastic deformations such as stretching or twisting. For example, a circle is topologically equivalent to an ellipse in that it can be deformed by stretching it. It also deals with the study of spatial features such as surfaces, curves and the space known as the universe.

This branch in mathematics was developed from geometry and set theory by analyzing concepts such as space, dimensions, and transformations. Leonhard Euler's treatise on the Seven Bridges of Königsberg from 1736 is considered to be one of the first practical applications of topology.

Topology also has many subfields such as algebraic topology, general topology, differential topology, and geometric topology.

The seven bridges of Königsberg:

The old town of Königsberg has seven bridges. How can you walk around the city, every part of the city
visit and cross each bridge only once?

What is topography?

Topography is a branch of geography that deals with the study of surface features of the earth and other observable astronomical objects such as the sun, moon, and planets. The phrase topography of an area refers to the natural and man-made physical features of an area.

The main purpose of topography is to identify certain features of an area, recognize typical landform patterns, and determine the location of a feature based on latitude, longitude, and elevation.

In a narrower sense, the topography only includes relief or terrain, specific landforms and three-dimensional surfaces of the area. A topographic map is a map that shows the features mentioned above. Such features are depicted on a map using a variety of techniques including bump shading, contour lines, and hypsometric tinting. Below is an example of a topographic map.

What is the difference between topology and topography?


topology is a field of mathematics.

topography is an area of ​​geography.


topology is the study of geometric properties and spatial relationships that are not influenced by the constant change in shape or size of figures.

topography is the study of the arrangement of natural and man-made physical features of an area.


The topology generally does not use a card.

topography often uses card.

Image Courtesy:

"Königsberg Bridges" By Bogdan Giuşcă - based on a public domain image (CC BY-SA 3. 0) via Commons Wikimedia

"R. O. Macedonia Topography" by Future Perfect at sunrise - Own work (Public Domain) via CommonsWikimedia