Heat Radiation

Heat is transferred in three different ways

• Heat energy can be transferred by radiation, conduction or convection.
• Heat Radiation is the transfer of heat energy by infrared (IR) radiation.
• Conduction and convection involve the transfer of energy by particles.
• Conduction is the main form of heat transfer in solids.
• Convection is the main form of heat transfer in Gases and Liquids.
• Infrared radiation can be emitted by solids, liquids and gases.
• Any object can both absorb and emit infrared radiation, whether or not conduction or convection is taking place.
• The bigger the temperature difference between a body and its surroundings, the faster the heat energy is transfered.

Infrared radiation - emission of electromagnetic waves

• All objects are continually emitting and absorbing infrared radiation. Infrared…