General Explanations How the Thermal Energy Transferred

Thermal energy can be transferred to or from a system by conduction, convection, and radiation. Remember that heat is energy transferred from a system with a higher temperature to a system with a lower temperature (both of which are in contact) through particle collisions - constituent particles.

Conduction occurs when heat energy moves through a material as a result of collisions between electrons, inon, atoms, and molecules of the material. The more heat a substance, the higher the average kinetic energy - the average atom. If there is a temperature difference between material - material that is in contact, when a collision occurs between two atoms, atom - atom with higher energy in the warmer substance transfers energy to atoms - atoms with lower energy in the cooler substance . Thus, heat flows from hot to cold.

Convection thermal energy occurs in a liquid when warm material flows thereby replacing the cooler material. Common example is the flow of warm air from a heater vent and a flow of warm water in the Gulf Stream.

Radiation is energy which transfer by electromagnetic waves that shines through the vacuum between atoms and empty space. Different energy glowing with heat, although both are related to the energy moving. Heat is heat, electromagnetic radiation is electromagnetic radiation, do not confuse the two.

A black body is a body that absorbs all radiant energy falling on it. At thermal equilibrium, the object emits as much energy is absorbed. So a good absorber of radiation is also (a) good radiation transmitter.

Radiation is the transfer of heat through electromagnetic waves or packets of energy (photons) which can be down to the very long distances without the need for interaction with the medium (this is why the radiation heat transfer is very important in a vacuum chamber), in addition to the amount of energy emitted is proportional to the temperature of the object. Both of these events that distinguish between conduction heat transfer - convection with radiation heat transfer.