Examples of conductors include the human body, metals, aqueous solutions of salt, graphite, copper, silver and gold. Conductors are materials that can transfer heat and transmit electricity. Conductors have a high density, allowing particles to flow freely and collide.
Some of the worst conductors of electricity include rubber, polymer and plastic. A bad electrical conductor is an object or material that does not allow electricity to flow freely through it. An insulator does not allow electric current to pass through it. Most metals, such as copper, are good condu
The best conductor of heat is diamond with a thermal conductivity of more than 2,000 watts per meter per degree Kelvin at room temperature. Silver is the material with the second-highest thermal conductivity at 429 watts per meter per degree Kelvin. This makes silver the metal with the highest condu
Metals conduct electricity well because their electrons can move more freely than those in nonmetals. The structure of a metal atom's electron cloud makes it easy for the atom to gain or lose electrons in chemical reactions. Electrons repel these loose electrons and send them through the metal.
Non-conductors of electricity are also known as insulators. Insulators do not allow a significant amount of electrical current to flow through. Some examples of insulators are glass, rubber and plastic.
Silver is the best metal conductor, but graphene is the best overall material at conducting electricity. Graphene consists of carbon atoms arranged in extremely thin sheets, and has the lowest electrical resistance of any commonly known material.
Iron is a good conductor of electricity but not the best. Iron is a metal, which makes it a much better conductor than an insulator, but different metals have different conductivity levels. Iron is a relatively cheap metal and is widely used in products requiring conductance.
According to the New York Times, a conductor's stick is called a "baton." Batons are primarily used with bands and orchestras. Directors of choruses are less likely to work with them.
Water is a poor conductor of heat, and is actually classified as an insulator of heat. Materials that are good conductors of heat and of electricity must have free electrons that can carry the energy from one compound to the next.
The best railroad conductor training programs are administered by the railroad corporations and offer paid training and job placement when training is complete. Two examples of such companies are BNSF Railway and CSX. To obtain a federal railroad conductor's license independently, courses are offere