Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas
AMA | October 2024
Sean Carroll
There is still a mass for the whole box. I imagine that the size of the box... have no energy. I'm imagining this as a thought experiment. There's an energy that I get from the combination of all the energy of the photons inside the box, and there's a rest frame for that box, okay? There's a rest frame.
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