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.
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