Can you guess how ordinary and convection oven Works?

In an ordinary oven,whatever is closest to heat coils at the top and bottom tends to cook first. A convection oven surmounts this flaw with the simplest of improvements ,a third coil in the back of the oven with a fan that blows the hot air around the oven.The circulating air penetrates cold spots and bumps against the food itself from different angles.The more efficient transmission of heat means that food can be cooked at a lower temperature or for a shorter time.