1. The problem statement, all variables and given/known data The ice is placed in water, we know the surface area A, emissivity of both ice and water, Stefan-Boltzmann constant and the temperature of both ice and water. What is the equation for heat transfer rate between water and ice? 2. Relevant equations Heat transfer rate by radiation = [PLAIN]https://upload.wikimedia.org/math/9/d/4/9d43cb8bbcb702e9d5943de477f099e2.png*A*e*T^4 [Broken] 3. The attempt at a solution I assume there are two options at least, one where we need to calculate radiation from both water and ice, and the difference will be output of whole system, and the othere one would be just water radiating the energy toward ice, so water directly surrounding ice would have the same surface area as ice.