Physics › Section I · Temperature, gases, and heat › Topic I.7
Conduction, convection, and radiation
Heat always flows from hotter to colder, but it can travel in three quite different ways. Knowing which one dominates tells you how to insulate a house, keep a drink cold or estimate how much warmth a stove gives a room.
In this topic
- Three ways heat travels
- Conduction: passing energy along
- The conduction equation
- Worked example: heat through a wall
- Worked example: a copper rod melting ice
- Convection: heat carried by a moving fluid
- Insulation: keeping air still
- Radiation: heat as light you cannot see
- The Stefan-Boltzmann law
- Worked example: a wood-burning stove
- Common mistakes to avoid
- Key takeaways
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