Three processes of thermal transfer: conduction, convection and radiation.
Conduction vs Convection:
- both requires a medium for thermal transfer to take place.
- convection cannot take place in solid but conduction can.
- conduction is due to vibration and collision of molecules while convection is due to fluid density changes.
Radiation vs Conduction & Convection
- Radiation can take place in vacuum but both conduction and convection require a medium.