Some examples of conduction are a pot on a hot burner, a spoon in hot tea and touching a hot cup of coffee. In each of these examples, there is a transfer of heat from the hotter object to the colder one. Heat transfer occurs when there is molecular agitation and energy flow from an object at a higher temperature.Know More
Some other examples of conduction are using a heating blanket to keep warm, a finger getting burned after touching a hot stove and placing a hot poker iron into water. Different materials are better heat conductors than others. For example, most metals are good conductors of heat.
However, the three types of heat transfer are conduction, convection and radiation. While convection is the heat transfer that occurs by the movement of a heated medium, such as air or water, radiation is the transfer of energy by electromagnetic waves through space. Some examples of convection are a greenhouse, the rising air in the atmosphere and an electric heater that warms up a cold room. Examples of radiation are the sun's rays, heat from light bulb filaments and using a solar oven to cook food.
Radiation differs from conduction and convection because its heat transfer involves electromagnetic waves. In conduction and convection, the transfer of heat occurs through the movement of particles.Learn More
One joule is equal to the work done by the force of a single newton when its points of application travels through a distance of 1 meter in the same direction as the force, so it is also equivalent to 1 watt-second or 0.2390 calories. The joule is named after James Prescott Joule, and it is a standard unit of work or energy in the International System of Units.Full Answer >
A common wire is either a connecting wire or a type of neutral wiring, depending on the electrical circuit. When it works as a connecting wire, the wire connects at least two wires of a circuit together.Full Answer >
According to the Union University Department of Physics, when an electric current passes through a solid copper wire, the electrons move forward, but the protons within the positive atoms of copper do not. Electricity travelling through a wire moves at an extremely fast speed and is capable of powering anything from a light bulb to a laptop.Full Answer >
The conducting abilities of water depends on the type of water or the purity of it. Pure water, that does not have any other elements in it is a better insulator of electricity than it is a conductor. The opposite holds true for things like salt water, because of the extra elements in it.Full Answer >