When bellows are used to below air on to a fire the fire burns birghter?

When bellows are used to blow air onto a fire, they increase the oxygen supply available for combustion. More oxygen allows the fuel to burn more efficiently and at a higher temperature, resulting in a brighter flame. This process enhances the fire's intensity and can help it consume fuel more rapidly. Consequently, the increased airflow from the bellows contributes to a more vigorous and luminous fire.