Insulator definition

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Insulator, any of various substances that block or retard the flow of electrical or thermal currents. This contrasts with other materials, semiconductors and conductors, which conduct electric current more easily. An insulator is a type of cis-regulatory element known as a long-range regulatory element. The fact that insulators can interrupt a current means that they are useful as devices that protect people from electricity.

Any material that keeps energy such as electricity, heat, or cold from easily transferring through is an insulator. Woo plastic, rubber, and glass are good insulators. A block of material, typically glass or ceramic, enclosing a wire carrying an electric current where it crosses a support. In laparoscopic electrosurgical instruments, for instance, ceramics such as alumina and zirconia serve as insulators to protect surgeons from the electric current running through the device.

The definition of an insulator is something that is used to keep heat or sound containe or something that does not conduct electricity. Soundproofing material is an example of an insulator.

Insulator is a material in which the highest occupied energy band (valence band) is completely filled with electrons, while the next higher band (conduction band) is empty. An insulating material used in bulk to wrap electrical cables or other equipment is called insulation. The term insulator is also used more specifically to refer to insulating supports used to attach electric power distribution or transmission lines to utility poles and transmission towers.

Some materials do not allow electricity to pass through them. These materials are known as electrical insulators. Plastic, woo glass and rubber are good electrical insulators. A material that permits the free passage of current is called a conductor and one that opposes the passage of current is called an insulator.

This is the British English definition of insulator. View American English definition of insulator. Change your default dictionary to American English. View the pronunciation for insulator.

Fat is an excellent insulator against the cold. Often times these insulators are colour-coded to make it easy to tell what function the wire inside is serving, see figure for an example.

The air trapped between layers acts as an insulator to reduce heat transmission. Wool is fluffy and airy so it serves as an insulator to prevent the heat of the body from escaping.

Solid ice is a poor insulator, when compared to compressed snow. The basic definition of the insulator : Insulator is a material or a device which restrics the flow of free electrons (or charge). The symbolic representation of the insulator : Moreover, the insulating material plays an important role in the making of various electrical and electronic circuits and overhead power systems.

Electric charges are absent in insulator. Examples of these materials include plastic, rubber, woo and glass. Air is also an insulator.

Most electrical objects are made using insulators to keep them safe. Plugs, for example, have plastic cases. Jump to navigation Jump to search. Definition from Wiktionary, the free dictionary.

That acts as an insulator. It plays an important role in an electric system by preventing the current leakage. There are different types of insulators but this article summarises suspension type insulator, which operates above 33KV. The insulator serves as a handle for moving the conductor around on top of a lab table.

If charging experiments are performed with aluminum pop cans, then the cans should be mounted on top of Styrofoam cups.