insulator

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insulator

[′in·sə‚lād·ər]
(electricity)
A device having high electrical resistance and used for supporting or separating conductors to prevent undesired flow of current from them to other objects. Also known as electrical insulator.
(materials)
A material that is a poor conductor of heat, sound, or electricity.
(solid-state physics)
A substance in which the normal energy band is full and is separated from the first excitation band by a forbidden band that can be penetrated only by an electron having an energy of several electronvolts, sufficient to disrupt the substance.

electrical insulator

A component or device made from material having great enough resistance to the flow of electric current to be effectively considered as a nonconductor of current.

insulator

A material that does not conduct electricity. Contrast with conductor.
References in periodicals archive ?
Contract awarded for insulator and the cap under the insulator of all on a common basis
Browse 85 market data Tables and 50 Figures spread through 158 Pages and in-depth TOC on " Industrial Insulators Market"
The main application of the product is in building construction industry in thermal insulators of the surfaces, especially in building valves and prevention of energy loss.
Taking into consideration the problems and weak points in common thermal insulators, including low efficiency, high weight and thickness, big size and high production cost, the researchers tried to overcome some of the problems by using nanomaterials.
UHV gas bushings made by NGK Insulators (left) and contamination test of a UHV bushing shell
Since predicting the existence of topological insulators in 2005, physicists have salivated over the materials' unique properties (SN: 5/22/10, p.
Hence, demand generated for insulators from development of such transmission lines is quite low.
Porcelain and glass insulators are often used to insulate overhead power lines.
So Quimby, who had taken a class on selling stuff on eBay, put both insulators on the auction Web site to see what they'd fetch.
will manufacture porcelain insulators, especially substation apparatus insulators, the Nagoya-based company said.
The Ministry of Economy, Trade and Industry (METI) said Tuesday it estimates a maximum of 41,000 tons of ozone layer-depleting gas, mainly from construction heat insulators, remain in Japan.
Waiting for production of standard thermoset or ceramic insulators would have kept the lights out for quite a while.