This is a word that admits several concepts from different fields; One of the most widespread uses of the word occurs at the request of interior or exterior lighting, to designate that electric lamp that emits a very strong light and is directed in a certain direction.
Generally, since they are luminaires that provide or provide a fairly intense flickering light, they are regularly used in specific places where the clarity is very low or there is none at all and because extensive lighting is required, among them: football stadiums, stages where musical events, rooms are held theater, televisions, lighting of buildings, streets and houses, among others.
In geometry, a focus is known as that point closely related to the construction and properties of conic sections. A circumference and a parabola have a focus. The focus of a circle is also the center of the circle. Sometimes it is convenient to talk about a circumference that has two coincident focuses; that is, two focuses occupying the same point. Similarly, a parabola is sometimes considered to have a second focus at infinity. An ellipse and a hyperbola have two foci.
For its part, in the field or branch of physics, a focus will be the point at which a beam of light rays or a beam of heat rays begins.
In the health area, when referring to a focus we understand the place where something is concentrated and from which it will spread or cease to exert a significant influence, while an infection is the disease that develops pathogenic germs in a given organism.
In linguistics, we also find a reference for this word, since the focus is on a sentence and that syntactic element to which relevance is attributed from intonation.
On the other hand, when we want to express that place where something has been concentrated or that place from which something spreads and spreads, we speak in terms of focus. The city of Buenos Aires is one of the most important artistic and cultural centers in Latin America.
