In most applications the fin is surrounded by a fluid in motion and subsequently the heat gets transferred to or from the body quickly due to the high thermal conductivity of the fin .
Motion heats or cools it quickly due to the large surface area .
In most applications the fin is surrounded by a fluid in motion , which heats or cools it quickly due to the large surface area , and subsequently the heat gets transferred to or from the body quickly due to the high thermal conductivity of the fin .