What method of heat transfer can affect ignition of objects far from a fire?

Radiation is the correct method of heat transfer that can affect the ignition of objects far from a fire. Unlike conduction and convection, which require direct contact or the movement of hot air to transfer heat, radiation involves the emission of energy in the form of electromagnetic waves. This means that heat from a fire can travel through the air and warm nearby materials or surfaces without direct contact.

In practical terms, this is why materials located several feet away from an intense heat source can ignite; they absorb sufficient thermal energy through radiation. The effectiveness of radiant heat transfer increases the further an object is placed from the fire source, as long as there are no barriers blocking the radiated heat.

Understanding the significance of radiation in fire behavior helps firefighters anticipate potential ignition risks in a diverse range of scenarios, allowing for proactive measures to protect property and ensure safety.