Heat exchange mechanisms
Conduction - molecules or atoms exchange kinetic energy of directly (through collisions) with other molecules or atoms
Convection - heat transfer a three step process of conduction, advection, & conduction
- Conduction warms part of an object
- The warmed part moves to a cooler location
- Heat conducts from the transported warm part to its cooler surroundings
Radiation - objects loose or gain energy by emitting or absorbing electro-magnetic (EM) radiation
- Objects at any temperature above 0°K emit EM radiation
- Energy content of EM radiation proportional to frequency & inversely proportional to wavelength
- Emitting & absorbing objects behave like black-bodies