Electrical Conductors vs Insulators

In the article “Conducting Solutions” I learned an electrical current is just a flow of electric charge. When a metal conducts electricity its carried by electrons moving through metal. Did you know pure water only contains

* Copper, gold and aluminum are all alloyed with other metals to make them harder.

Insulation slows the process of heat leaving an object. Most insulation contains lots of air spaces. The air spaces slow the flow of heat leaving the object because the heat takes longer to travel through the air spaces. Insulation is a material or substance that is used to stop heat, electricity, or sound from going into or out of something (Insulation, 2015, pg. 1). Insulation is commonly thought of in

In the story "Energy story" it talks about the structure of an atom and electrons and how electrons can move easier in somethings than in other things, like in paragraph 21-22 it says that thing like rubber cloth glass and dry air are good insulators, which means that electrons don’t move as well as in things like copper, aluminum, and steel.

The use of the telegraph was increased when Morse and his team received funding from the US government to send a message from Washington, D.C. to Baltimore, Maryland. History.com states that:

Insulator – Do not allow electric charges to pass through them. Electrons in the atoms and molecules move very slightly to one side of the object but are not released.

An electric current exists when there is a net flow of charge through a given area. Electrons flow from the negatively charged region to the positively charged region. This is usually accomplished by using an electrical conductor which allows the electrons to pass freely through the material (Serway, et al. 709). This flow of electrons can generate heat when collisions between the molecules and electrons occur. These collisions then cause the molecules to break apart thus releasing heat. Some common examples of electrical energy are lightning, static electricity, and wiring outlets (Coleman, et al. 82). For the wildland firefighter, lightning is probably the

Conducting Solutions is important in life because it apart of science. If you want to be a scientist, then you would need to know what conducting solutions is. This article also talks about ions and electrical currents. Some demonstrations of this are ammonia vinegar mixed with molecules solutions and conduct electricity. Some water contains ions which conducts electricity really well Conducting Solutions is really important to know.

Introduction: Voltage can be thought of as the pressure pushing charges along a conductor, while the electrical resistance of a conductor is a measure of how difficult it is to push the charges along. Using the flow analogy, electrical resistance is similar to friction. For water flowing through a pipe, a long narrow pipe provides more resistance to the flow than does a short fat pipe. The same applies for flowing currents: long thin wires provide more resistance than do short thick wires. The resistance (R) of a material depends on its length, cross-sectional area, and the resistivity (the Greek letter rho), a number that depends on the material. The resistivity

There are 3 types of metals for electricity conducting: metallic conductor, semiconductor, and superconductor. Metallic conductors allow the free flow of ions and electrons through a sample; and its conductivity decreases as the temperature increases.

     Copper is one of the earliest elements known to man. Because of its distinct red color, Copper is very easily identified. In the ancient times, copper could be found lying in the ground in its unattached state without interaction to other substances. Copper and its compounds have many uses in today’s society.

into weapons or tools. Copper has been one of the most useful metals for over

An electricity and magnetism phenomenon apparently unrelated to power are electrical magnetic fields. We are familiar with these forces through the interaction of compasses with the earth's magnetic field, or through fridge magnets or magnets on children's toys. Magnetic forces are explained in terms very similar to those used for electric forces:

In the early 1900's a duch physicist by the name of Heike Kammerlingh Onnes (pictured above), discovered superconductivity. Before his discovery, Onnes had spent most of his scientific career studying extreme cold. The first step he took toward superconductivity was on July 10, 1908 when he liquified helium and cooled it to an astonishing 4 K, which is roughly the temperature of the background radiation in open space. Using this liquid helium, Onnes began experimenting with other materials and their properties when subjected to intense cold. In 1911, he began his research on the electrical properties of these same materials. It was known to Onnes that as materials, particularly metals, cooled, they exhibited less and less resistance. Bringing a mercury wire to as close to absolute zero as possible, Onnes observed that as the temperature dropped, so to did the resistance, until 4.2 K was reached. There resistance vanished and current flowed through the wire unhindered. Below is an approximate graph displaying resistance as a function of temperature for the experiment Onnes conducted with mercury:

Now we will move onto other materials that are involved with electronics. The next group of materials that will be discussed are insulators. An insulator is a material that does not conduct electricity at all but will resist or stop it from traveling further. An insulating atom has eight electrons in its valance shell which makes this shell complete. Eight is the most electrons that any atoms can have in their valance shell this is why these are called insulators, no more electrons can fit in the valance shell of these atoms.