Heat Transfer Explained: Conduction, Convection, and Radiation

Heat transfer is how thermal energy moves—through conduction, convection, or radiation.
Conduction is heat passing through direct contact, like a spoon warming in hot soup.
Metals are great conductors because their electrons move energy quickly.
Convection is heat carried by moving fluids, like warm air rising or water boiling.
Weather patterns, ocean currents, and even home heating rely on convection.
Radiation is heat traveling as electromagnetic waves—no medium required.
The Sun warms Earth through radiation across the vacuum of space.
Everyday life mixes all three: a campfire warms by conduction (log), convection (air), and radiation (flames).
Insulators like wood or foam slow conduction by trapping air pockets.
Understanding heat transfer helps us design efficient stoves, buildings, and even spacecraft.