Hi. Suppose I have 2 cylindrical bodies of the same radius and length - one is a good thermal conductor, while the other is a bad conductor. The upper end in each case is kept at a constant temperature T1, while the lower end is in contact with a steel disk of same radius, which is in free contact with air. Now, my question is, at any instant of time, which cylinder will be losing more energy to the air through its curved surface area? What difference does a bad conductor and a good one make in heat transportation by convection? Thanks!