• Shiki@lemmy.world
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    1 year ago

    No energy is every transferred as a result of a portal

    You fly in the air if you drop in one because you are carrying momentum downwards that suddenly translates to upwards

    You are sat in the floor, a portal flies towards you. You are sat at the floor at the end, you had no momentum going in and no momentum going out

    • cryptosporidium140@lemmy.world
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      1 year ago

      Exactly how fast do you think the people exit that portal? Train speed, less than train speed? What slows them down after they exit? If you blocked the stationary portal would you get hit by the people? If so, what force would cause that?

      The people may be stationary relative to the area outside the first portal, but they already have velocity relative to the world outside the exit even before they go through

      If there were no people on the track and you blocked the stationary portal, would you feel wind on your face?

      • Shiki@lemmy.world
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        1 year ago

        Zero fast. There is no energy being transferred to the people, they would plop out and push into each other as they are forced through.

        If you blocked the stationary portal then the portal moving would essentially just be a wall, no one would go though.

        This whole relative thing makes no sense, energy isn’t just created because it’s observed by someone else, the door is moving not the people so them sitting there won’t suddenly be catapulted going through a moving portal, where is that energy created?

        Your wind question is confusing.