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Ok so i just spent the last hour+ reading through that link and the rest of Bird's site. I understand know the importance of equilibrium in such systems.
Question1: What causes the mirror temp to rise when cooling is turned off? Whats heating it?
Question2: Without cooling, If the mirror is hot why does the tube temp drop bellow ambient would not the heat from the mirror rise up the tube like a chimney? Hence should not the tube temp follow in sync with mirror temp?
I still am missing an aspect to this, i think i need more information about the flow of energy in this system.
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