The Greek term kýlindros derived from the Latin cylindrus, which came to our language as a cylinder. This Greek noun was used, at first, to refer to a transport roller to carry large bundles. However, with the passage of time it also began to be used as a synonym for rolled book or documentary-type roll.
It is a geometric body that is formed from the parallel displacement of a generatrix (straight) along a directrix (flat curve). When the generatrix is perpendicular to a directrix that is a circle, a straight and circular cylinder is obtained.
Specifically, we can determine that it is formed by a rectangle, which comes to act as the lateral area of that figure, and by two circles that are the bases of it.
When working with the cylinder, you can know from what its axis is to calculate its height through determining the radius. This is the length from the shaft to the end of the cylinder.
By antonomasia, the idea of cylinder generally refers to these straight and circular cylinders. Its surface is formed by the generatrices that house all the points of the guideline.
There are numerous structures and parts that, due to their shape, are known as cylinders. The internal combustion engines, for example, have cylinders occurs where the movement of the pistons. The fuel that is in the combustion chamber, when the engine is running, generates an explosion that produces the linear displacement of the piston located inside the cylinder. The movement is transmitted to a connecting rod, which is linked to the piston and the crankshaft. The crankshaft transforms linear motion into circular or rotary motion.
In wind musical instruments such as certain tubas and horns, the cylinder – also called a rotary valve – works like a key or a piston: when squeezed, it changes the pitch of the sound.
According to DigoPaul, the hermetic container that contains volatile liquids and gases; the piece that allows the movement of the plunger of certain machines; the drum of a clockwork machinery; and the printing element that, when rotating on the mold, makes the impression, are also called a cylinder.
In the same way, we cannot forget that CILINDRO is the name of a Spanish company created in 1986 that specializes in what is material and accessories for both communities and offices. It is currently a leading company in its sector.
In the sports field, the term that concerns us now is also used. Specifically, it should be known that the Presidente Perón football stadium that exists in Avellaneda (Argentina) is also known as El Cilindro de Avellaneda.
