If i had a vaccume and a carbon nanotube rotating such that the ends are moving at the speed of light, and another going the opposite direction (no net rotational inertia outside the device), I would have a dimensional anchor as moving it would cause spacetime to exceed the speed limit.
Read The Billiard Ball by Asimov to understand why a gravitationally “locked” device would not work.
You lose the frame of reference to the astral bodies around it, therefore it stays in place as the Earth and everything else simply move past it. Essentially useless as an anchor.
If i had a vaccume and a carbon nanotube rotating such that the ends are moving at the speed of light, and another going the opposite direction (no net rotational inertia outside the device), I would have a dimensional anchor as moving it would cause spacetime to exceed the speed limit.
Voila, I just created a sci-fi plot device
Read The Billiard Ball by Asimov to understand why a gravitationally “locked” device would not work.
You lose the frame of reference to the astral bodies around it, therefore it stays in place as the Earth and everything else simply move past it. Essentially useless as an anchor.