Ask A Genius 372 – Hollow Spheres and Blackish Holes
September 1, 2018
[Beginning of recorded material]
Scott Douglas Jacobsen: What happens in a hollow sphere for a passing photon? How does this relate to the posited astronomical bodies, blackish holes (rather than, similarly, black holes)?
Rick Rosner: If you are on the surface of a hollow sphere, you feel the pull of 10 meters per second per second that is holding you on the surface of this hollow sphere. If you drill a hole into the sphere and go into the center of the sphere, you are apparently weightless, wherever you are in the sphere.
The math works out that way. Any photons you should from the surface of the sphere as they crawl out of the gravitational well will lose the same amount of energy as any photons shot from inside the sphere through the hole you’ve drilled in the sphere regardless of where you are shooting from.
So, the gravitational acceleration experienced or a photon would experience as it climbs out of the pit – or the shape of the pit – is it curves downward until you hit the surface, and then it is flat all the way to the center and all the way from the center to the surface again, and then it curves back up.
It is like that shape you have seen. The cone that is pinched with the tip of the cone cut off. And the net effect of passing through all the little hollow spheres all the way to the center of a body is that it looks like the bottom half of a circle, roughly.
And in a blackish hole, we’re saying the scale of space itself tightens up. So, there is more space inside. There is more volume inside a blackish hole than what you see outside of a blackish hole.
That is another thing that buffers the gravitational curvature and evens everything out. At the neck, you get the super severe effects.
[End of recorded material]
American Television Writer
Scott Douglas Jacobsen
Editor-in-Chief, In-Sight Publishing
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