The word sphere has several references in our language.
On Geometry, it designates the one geometric body that is bounded by a curved and closed surface, in which its points are equidistant from the internal surface known as the center.
As it is a solid of revolution, the sphere can be drawn, built, by rotating a semicircular surface around its diameter.
It should be noted that in our current language it is common for people to refer to a sphere through these terms: globe, circle, ball, ball and balloon.
On the other hand, in the field of watchmaking, the word sphere turns out to be in common use since it names that circular surface on which clock hands will rotate.
Also, the word is used at the behest of the social sphere to account for the class or condition presented by an individual. Thus when a person belongs to the lower class of a society because he does not have the necessary economic resources, it will then be said that corresponds to the lower spheres of society in question, on the other hand, when a person due to his notable economic power is an integral part of the upper class, it can also be expressed that it is part of high places.
Another use that presents the term in our everyday language, allows to designate that field to which it corresponds to attend to certain questions because they are within its competence. As of next month this issue will no longer belong to our sphere, it will have to be resolved with the human resources area.
For its part, the concept of sphere of influence, so used in the political field, designates that area in which a state holds an indirect authority at all levels of the country, social, political, economic and cultural, among others.
And another hyper popular concept that we usually use is that of celestial sphere to name the planet in which we live: the earth. This use is precisely related to the circular shape of the earth.
