in “Eternity in six hours”, Armstrong and Sandberg ignore a fundamental physical law known as the constant radiance theorem. It states that the radiant flux from a thermal source cannot be concentrated above the value at the emitter. They proceed to imagine an exponential growth of energy delivered to their system that exceeds this fundamental limit by at least 6 orders of magnitude.
Wow, this seems to be a big-if-true claim! I have ~no knowledge of the subject matter, but if you haven’t already I’d encourage you to talk to the authors about this. Assuming you are right and they do not know yet that they were wrong in this important way, them finding out seems very valuable!
in “Eternity in six hours”, Armstrong and Sandberg ignore a fundamental physical law known as the constant radiance theorem. It states that the radiant flux from a thermal source cannot be concentrated above the value at the emitter. They proceed to imagine an exponential growth of energy delivered to their system that exceeds this fundamental limit by at least 6 orders of magnitude.
Wow, this seems to be a big-if-true claim! I have ~no knowledge of the subject matter, but if you haven’t already I’d encourage you to talk to the authors about this. Assuming you are right and they do not know yet that they were wrong in this important way, them finding out seems very valuable!