How various surfaces can be compared by a Leslie cube?

A Leslie cube is an experimental device used to compare the emissive and absorptive properties of different surfaces. It consists of a hollow cube with one face coated in a black matte finish, while the other faces are covered with various materials or colors. By heating the cube and measuring the temperature of each face over time, one can determine the thermal radiation emitted or absorbed by each surface. This allows for a comparative analysis of the surfaces' effectiveness in heat emission and absorption.