How to Use Light to Move Heat Around in a System

The idea of light as the sort of pipe. That is not at all intuitive. It was very hard to know if it would work. So we had to take a little bit of a leap of faith that we would be able to solve that problem. And it really is just clever use of void space within the system is the answer. You just need to have spots where there isn't carbon so that the light from certain areas of the system can travel to another area of the system.