Radiant heat primarily travels in which manner?

Radiant heat primarily travels in invisible waves. This method of heat transfer occurs through electromagnetic radiation, which does not require a medium to propagate. Unlike conduction, which involves direct molecular contact to transfer heat, or convection, which requires a fluid (liquid or gas) to carry heat, radiant heat can move through the vacuum of space. This is why radiant heat is often associated with sources like the sun or a flame; you can feel the warmth even when there is no physical contact with the heat source.

This understanding underscores the importance of fire behavior and thermal dynamics in firefighting, as it helps firefighters recognize how heat from a fire can affect their environment and actions, even from a distance.