The term radial comes from radius (radius in Latin), an essential concept within mathematics, specifically geometry. The radius is that segment that joins the central point of a circle with any of its points, its length being half its diameter.
Thus, radial expresses the scope or distance of something, that is, its space of action or influence. If we speak of electromagnetic waves, we have radio or radio broadcasts, a phenomenon that was applied around 1920 to a new means of communication, radio. If we place ourselves in the context of urban planning, there are several city models depending on their structure and the radial city is one that develops from a central point and its different arteries have a radial shape (Paris is a clear example of a city radial type).
On the other hand, it is possible to speak of a series of everyday objects that incorporate the radial in some sense: a tire, a fan, a target to play darts, etc.
What is a radial?
In the world of carpentry and DIY, a power tool is used to cut different materials. This tool is known as radial and incorporates a series of discs depending on the different materials to be cut (the corresponding type of material is indicated on each disc).
Radial symmetry
As a general concept, radial symmetry is the structure of a body made up of two equal parts and, at the same time, with their axes of symmetry that intersect at the same point. Radial symmetry is especially visible in plane figures.
This concept is applied in the study of biology to describe the shape of some living things. Keep in mind that most animals can be divided based on their symmetry (bilateral or radial symmetry). This division is important; Among other reasons, because it allows us to understand the degree of evolution of each animal (radial symmetry is more primitive than bilateral symmetry).
A manifestation of qualities in the animal world
The symmetry or asymmetry of animals also allows us to know how they live, their vital functions or their adaptive capacity. The animal radial symmetry is, therefore, the form that a body has and that allows it to be divided into similar halves. A characteristic example of this structure in the animal world would be the sea urchin or starfish.
This phenomenon is equally applicable to plants, viruses or any other natural element. In parallel, in art (which somehow imitates nature) there are also radial symmetrical structures: in the form of mosaics, rosettes, ornaments, architectural, etc.
