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 bales. However, with the passage of time it also began to be used as a synonym for a rolled book or documentary-type roll .
It is a geometric body that is formed from the parallel displacement of a generatrix (straight line) along a directrix (plane 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 acts as the lateral area of that figure, and by two circles that are its bases.
When working with the cylinder, you can know from what its axis is to calculating its height by determining the radius. This is the length from the shaft to the end of the cylinder.
Par excellence, the idea of a cylinder generally refers to these straight, circular cylinders. Its surface is formed by the generatrices that house all the points of the guideline.
There are numerous structures and pieces that, due to their shape, are known as cylinders. Internal combustion engines , for example, have cylinders through which the pistons move . The fuel found 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 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 it is pressed, it changes the pitch of the sound .
The airtight container containing volatile liquids and gases; the piece that allows the movement of the plunger of certain machines; the drum of a clock machinery; and the printing element that, when rotating on the mold, makes the impression, are also called cylinder.
In the same way, we cannot forget that CILINDRO is the name of a Spanish company created in 1986 that specializes in materials and accessories for both communities and offices. Currently it is a leading company in its sector.
In the sports field, the term that concerns us now is also used. Specifically, you should know that the Presidente Perón football Stadium that exists in Avellaneda (Argentina) is also known as El Cilindro de Avellaneda.