Consider looking at a 4D quasar with 3D lens

 When we see a quasar, and adjust for our 3D model, we collect observations that match in arrival, on what we think is a straight line. But it not a 3D straight line. The quasar is forming a slight torus, that beam of particles emitted from the center is really a funnel surface, empty inside.  

How do we test this? The best shot is to look at intensity changes in the eruption, bottom to top. Then commute what that would be in both the 3 and 4 dimensional models. Then do the same for that planar view of mater being swallowed. See which model explains the most.

If we could get two perfect mirrors in space, for apertures, on either side of the sun,  out by mars. Then exactly refocus their beams to a center point. We can dither a bit, we might just see the funnel, like a tornado. Or just get a monster aperture, enough to resolve down to the quasar center size, we just might be able to spot the tornado in an odd shaped gaussian blob, with kurtosis..

Measuring spin from a distance

The machine generates photon spin. I measure it at a long distance and so do you. How can our measurements be related outside of the experiment.

We both have accurate clocks, we know we are sampling at the same time. We do not now that the spin has a slight spiral we did not account for. in the quiet of the experiment, we are both measuring the same phase in the chiral. In other words, we have done what we intended, measure a quantum field. But I think that is simply another relative prime in the vacuum expectation. It is slight, but noticeable.

Black holes

Mass does not spiral into the black hole, it just spirals down the inside of an inner tube, and we are doing the same.  Then the issue is, do we spiral out or in from the tube center.  That depends on the ratio of the two curvatures making our cosmological constant. Super massive black holes might just be super masses spiraling along an axis we do not see.   We would think them coincidence in space and time, they are not. Quasar happen when those two curvatures are equal in some 4D interval, The separation of curvature enforced, we see an explosion.