What Is an Insulator

Any material on our planet which doesn’t conducts electricity is a insulator. Basically, Insulator can be described as a substance which is impotent in terms of serving electrical and thermal energies. The significance of insulators lie in this incapability and that is why every wire or cable uses insulator to avoid barriers of transmission. The physical layer of global communication is dependent on such insulators, especially our Information Technology. However, we are yet to produce to the perfect insulator. Therefore, we have to rely on non conductors such as glass and porcelain. Copper cables and coaxial wires include a dielectric insulator sheet wrapped over the wire.

Understanding the term: insulator

When you look at the dynamics of a conductor, you will find that it has mobile electrons. These electrons are found in the outer region of the conductors. These electrons are not bound by a force and move freely throughout the material. Thus in this way, it conducts electricity or thermal energy. Metallic elements have such type of characteristics and are considered as great conductors as they offer low resistance. Copper is regarded as the finest conductor of electricity and thermal energy.

On the other hand, if you look at the cross section of an insulator, you will see bounded electrons. These bounded electrons resist any external force, especially in the form of electric field and thermal energy. These bounded electrons are found in the outer region of insulators. When an insulator comes in contact with an extraneous force then the bounded electrons repel each other, which does not allow the force to smoothly flow through the material. While, these bounded electrons works as a repellent wall and completely shuts the entry of any energy form and this is the dynamics of a good insulator. This high resistance deny free flow of electrons throughout the material which completely isolates the material to conduct anything. Non-metallic elements are non conductors or insulators. Glass and wood are one of finest insulators but wood is organic in nature and it is not used in coating wires or cables. 

Significance of Insulators

Global communication is very much dependent on data transmitters such as cables. These cables or wires are coated with insulators which signifies its presence. There are many physical barriers of communication such as cross signals, air pressure, wind pressure and other natural barriers such as water and fire. Thus insulators completely insulates the wire which are responsible for transmitting data. Insulators work as an isolated wrapping over wires. Hence, coating of wire with insulators can be seen as a precaution used to avert any wire damage. This is one of the major advantages of insulators.

Insulators do not conduct electricity or thermal energy and are bad conductors of the same.  Insulators have tightly bounded electrons which inhibits free flow of any extraneous force such as thermal energy. Glass and Porcelain are renowned insulators. Insulators are widely used in coating wires and cables in order to repel any extraneous influence.