Dear PF Forum, I have a question regarding Einstein Elevator, which I believe there are many topics about this. But I haven't got the answer. I've watched some youtube video or read about it, I forgot. That our head is wiser than our foot, because time slow for our foot. Okay..., this could have been something in GR formula. My feet is at 6200 km from the earth center and my head is at 6200 + 1.7m. Even in Newton gravity formula my head wouldn't feel 9.8m/s2. Perhaps 9.7999999 something m/s2? Now in Einstein elevator. Would our head be older than our feet? Since there's no gravity there. And our head would be accelerated 9.8 m/s2 just as our feet? Thank you very much.