Why do frying pans have a thick base?
So that it has high Heat Capacity and it absorbs a large amount of heat without a high rise in temperature
A thick base pan has higher mass & hence higher heat capacity. A substance with large heat capacity absorbs a large amount of heat for a small rise in temperature. Due to its large heat capacity it will provide the food larger amount of heat at a lower temperature. This in turn makes sure that the food is cooked well without getting burnt.