Explanation: Radiation consists of the transfer of warmth energy via electromagnetic waves. No direct Make contact with or medium is needed for warmth transfer; it may manifest by vacant House. The flame heats any bordering gas so it releases gases too. Once the flame ignites the gases, the fire spreads. https://fire-rated-ductworth-insu24556.blogpixi.com/36893349/a-secret-weapon-for-fire-rated-ductworth-insulation