A cylinder is a geometric solid found in everyday life, such as a soup can. When you disassemble it, you'll notice that it has two ends called "bases" that are generally round. The bases are always congruent with one another and parallel. (For further information, see Surface Area of a Cylinder.) Between the two bases there is a hollow shell called the "body" or "container." This is where the meat soup comes from! The body is usually cylindrical but may be flattened on one or both ends. A container may also be called a "tube" or "stick."
There are many types of cylinders in nature, such as bamboo and wood, which are called "cylinders" because their shape is like a tube or stick. Other examples include brassieres and blood pressure cuffs.
Cylinders are important elements in our daily lives, from toys to tools, from bicycles to jet engines. They provide support for heavy loads by being strong yet light weight, and they often serve as a conduit for fuel or air. In science labs around the world, students use cylinders to conduct experiments. They build models using plastic cups and soda bottles, which are called "cylinder tanks." Some laboratories even use wine bottles instead!
In mathematics, a cylinder is a special kind of surface formed by rotating an open curve about a central axis.
A cylinder is a three-dimensional solid with two congruent (base) surfaces and one lateral surface. Although cylinders can assume many other shapes, the term "cylinder" typically refers to the correct round cylinder. A cone is similar to a cylinder, but with only one base surface.
Cylinders are commonly used as supports for pillars, towers, and buildings because of their stability. Cylinders can also be used as light posts or guard rails. When used as pipe, cylinders are called barrels. When used as rods, cylinders are called bars or sticks.
There are several different types of cylinders: architectural, air, oil, gas, chemical, and food grade.
Architectural cylinders are most often made from aluminum because of its strength and weight efficiency. Aluminum has been used for architecture cylinders since it was introduced into the United States in the 1950s. Before that time, steel was mostly used because it was believed that no material could replace steel for structural purposes. But aluminum has since then become the standard material because of its ease of workability and low cost. The typical architectural cylinder is about as thick as your thumb and varies in diameter from about 1/4 inch to 2 inches.
Air cylinders are used in air guns and some pneumatic tools.
A cylinder is a three-dimensional closed shape with two congruent, parallel (typically circular) bases that are joined by the set of all line segments connecting the two circular bases (forming a curved surface). All parallel cross sections of a cylinder will be congruent with the bases. Cylinders are typically used as containers for products such as food and chemicals, but they also appear in machinery and architecture.
Cylinders are one of the simplest shapes in geometry. They can be constructed using circles or cones. Circles are the only polygon that can be used to construct every cylinder. Any even number of circles can be joined together to form a cylindrical shell. The only exception is when the number of circles is odd and divisible by 3; in this case, a hexagonal shell results. Cylinders can also be constructed using cones. Cones are the only polyhedron that can be used to construct every cylinder. Any even number of cones can be joined together at their bases to form a cylindrical shell. The only exception is when the number of cones is odd and divisible by 3; in this case, a pentagonal shell results.
The term "cylinder" also applies to objects whose shape is similar to that of a hollow tube with a fixed diameter. These include barrels, jars, and tanks. Such objects are made by rolling or shaping metal or plastic.
A cylinder is a closed solid with two parallel (typically circular) bases that are joined by a curving surface. Cylinders can be made of any material that can be shaped without breaking—including glass, clay, metal, and wood—and they can be as large as necessary for their purpose.
In physics and mathematics, the term cylinder refers to any object whose cross-section is a circle or curve other than a straight line. Thus, a cylindrical shell would be a container with a circular base and a curved side wall attached to it. A hollow cylinder is one in which the interior walls are also curved. A solid cylinder is one that is neither hollow nor porous.
Cylinders are commonly used to describe certain objects in science and technology. A gas cylinder is a pressure vessel containing gas at standard temperature and pressure. A water tank is simply a cylinder filled with water. The shape of these objects is important for their function; for example, the shape of the inside of a water tank is such that water can be poured into it or it can be used to store or supply water when needed.
As well as cylinders made from metal or plastic, there are also wooden cylinders available for purchase.
[C] (SHAPE) geometry cylinder noun A solid with long straight sides and equal-sized circular ends, or a hollow device formed like this and commonly used as a container: A cardboard cylinder can be found within a roll of paper towels. Aage 5 diners used to sell milk from large cylinders.
Cylinders are usually made out of metal or plastic. They are used for storage, as well as dispensing liquid products such as oil or fuel. The name comes from the fact that they shape themselves into a cylinder when being used.
There are several types of cylinders available on the market: full, half, quarter, and mini.
A full cylinder holds all its contents, while a half cylinder contains half its original volume after being filled. A quarter cylinder is filled to one-quarter capacity of its volume, and a mini cylinder is filled almost to the top.
All types of cylinders have the same inside diameter at their middle, but the length varies. The shorter the cylinder, the more often you will need to replace its contents because there's not much room for error when filling these containers.
The term "cylinder" may also refer to someone who works in the oil industry: A worker who inserts a steel rod into an oil well hole to tap out oil barrels of approximately the same size as the rod is called a "cylinder man".
A cylinder (from Greek kulindros-kulindros, "roller", "tumbler") is a three-dimensional solid and one of the most fundamental curvilinear geometric forms. It's an idealized depiction of a solid physical tin can with top and bottom lids. The term cylinder applies to both hollow and solid objects.
The term cylinder is applied to objects that are circular in cross section. However, some objects with other shapes than round are also called cylinders: for example, squares or polygons with more than four sides have been called cylinders.
In mathematics, the study of curves in which length is taken to be the primary measure is known as geometrical algebra. A mathematical curve is called a circle if it is possible to divide its length into equal parts by any number of points. Thus, a circle is a special kind of cylinder in which the radius is equal to half the diameter.
Cylinders are commonly used in design work to represent containers such as bottles and jars. They also appear in many other areas of art and science, including architecture, archaeology, anthropology, engineering, physics, chemistry, biology, and psychology. Cylinders provide useful abstractions for thinking about three-dimensional shape. For example, a cylinder can be imagined as having two dimensions of symmetry, which can then be rotated independently to see what other properties it might have.