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Usually.

A2: Not, not usually. Something with high thermal efficiency usually has "pockets" of gas in it, say, closed-cell polyurethane foam. The total dielectric strength, therefore, is not much better than using the same volume of gas or air used to blow it.

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Are good thermal insulators good electrical insulators too?

no A2: Not necessarily. Solid plastics or solid glass or ceramic have high dielectric strength but not good thermal insulation. Closed-cell foam has good thermal insulating properties but not as good a dielectric strength as solid--there are pockets of gas or air in it. The D.S. is not much better than using the same volume of gas, alone.


Are napkins insulators?

Napkins are not good insulators, as they are thin and do not provide much thermal or electrical resistance. They are more commonly used for wiping and cleaning purposes.


What elements are good insulators?

Materials with high electrical resistance, such as rubber, glass, and plastic, are good insulators. Non-metals like wood and ceramic also have insulating properties. Additionally, gases like air and vacuum can act as insulators due to their low thermal conductivity.


What kinds of materials make good insulators?

There are a number of materials that make good thermal insulators. Blankets and pockets of air make good thermal insulators for example.


What is in an example of a good insulator?

A material or an object that does not easily allow heat, electricity, light, or sound to pass through it. Air, cloth and rubber are good electrical insulators; feathers and wool make good thermal insulators.


What makes good thermal insulators and conductors?

Good thermal insulators have high thermal resistance and low thermal conductivity, which helps to slow down heat transfer. Materials like foam, fiberglass, and wool are good insulators. Good thermal conductors, on the other hand, have high thermal conductivity and allow heat to transfer quickly. Copper, aluminum, and silver are examples of good thermal conductors.


The property of a substance that enables it to conduct electricity may also allow the same substance to conduct heat. An insulator does not conduct heat well. What elements are good insulators?

Elements such as silicon, rubber, and sulfur are good insulators because their atomic structure does not allow for the easy flow of heat energy. These elements have a high electrical resistance and low thermal conductivity, making them effective insulators.


How good insulator?

There are several types of insulators: thermal, electric,, sound insulators and other. I assume you are talking about electrical insulators. The electrical resistance per unit area of a wire and unit length is called specific resistance or resistivity r and it is obtained by the wire resistance R as r=R A / L where A is the wire area and L is the wire length. It is the resistivity that qualify a material as a good electrical insulator. Perhaps the best insulator among common materials is fused quartz whose resistivity is about 1016 Ohm m (that is one with 16 zeros after it !!). Also glass is a very good insulator, pure glass (that is pure amorphous SiO2 without any metal addition) has a resistivity of about 1014 Ohm m. Just for an additional reference, gold that is a very good electrical conductor has a resistivity of 2.35 10-8 Ohm m, that is 0,00000000235 !) It is to be observed that, due to the mechanism underlying electrical and thermal conductivity, solid materials that are good electrical insulators are generally also good thermal insulators (but few exceptions do exist).


What plastics are the best insulators?

Polystyrene and polypropylene are considered good insulators due to their low thermal conductivity. They are commonly used in applications where insulation properties are important, such as in packaging materials or electrical components.


Should the ceramic tiles on a shuttle be good thermal conductors?

No. They should be good thermal insulators.


Can you name all the good thermal insulators?

yes


Why are plastic good electricity insulators?

Plastics are a good electrical insulators because they are insulators. Electricity could not pass through them unlike copper. Another good example of insulators is rubber.