The thermal conductivity of a material determines how good an insulator it is. The official definition of thermal conductivity is the quantity of heat transmitted through a unit thickness in a direction normal to a surface of unit area, due to a unit temperature gradient under steady state condit...
A material that insulates, especially a nonconductor of sound, heat, or electricity. Conductors A lightning rod, as on a house or barn. Insulators A device that insulates. Conductors Plural of conductor Insulators Plural of insulator Common Curiosities What makes a material a good conductor? A...
A semiconductor is a material product with some of the properties of both insulators and conductors (hencesemi,meaning half or partial, conductor). Semiconductors are usually comprised of silicon, since this conducts electricity more than an insulator, such as glass, but less than a pure conductor...
What is a poor conductor of electricity? Which organic compounds are mostly good conductors of electricity? Can an insulator be charged? Explain. Which type of material (conductor or insulator) you would want to use in the following cases and provide an explanation? You need to move a live ...
Which material does not follow Ohm's law? Why? a. Mercury b. Tungsten c. Platinum d. Carbon What element has the second highest electronegativity? What property makes metal a good conductor and rubber a good insulator? Which of the following materials is the poorest electrical conductor? (A...
When we add pentavalent impurity elements to anintrinsic semiconductormaterial, it becomes an n-type semiconductor. Addition of pentavalent eliminates contributes a large number of free electrons in the semiconductor. We commonly use arsenic and
That’s because metal is a great conductor of electricity. (In fact, so is the human body, which is why you can sometimes pass the shock on to an unsuspecting victim.) The opposite of a conductor is an insulator, which impedes the flow of electrons from one material to another. Rubber...
Asbestos was considered the ideal military-grade material because it was an excellent fire retardant and insulator and resisted corrosion. Asbestos was used in many military assets, including: Bases Housing Planes Ships Vehicles While all branches of the military used asbestos-based products, no branch...
The pan must be made of aluminum or an aluminum alloy. The pan surface has to be specially prepared to receive the PTFE. Properties It is very non-reactive, partly because of the strength of carbon–fluorine bonds, and so it is often the choice of material used in containers and pipework...
A vacuum tube is an electronic device that uses a vacuum as an insulator and to shield against electric currents. It works by creating a vacuum inside the tube, which means there is no air or other material inside that could conduct electricity. Vacuum tubes are also known as valves in som...