Monday, 14 November 2022

The Inside Of A Black Hole Viewed Through Systemic Functional Linguistics

Davies & Gribbin (1992: 263):
By definition, we can never see inside a black hole. But theory can be used to infer what it would be like for an observer to enter a hole and explore its interior. The key to understanding the physics of black holes is the so-called event horizon. Roughly speaking, this is the surface of the hole. Any event occurring within the hole (inside the event horizon) can never be witnessed from the outside because no light (or other form of signal) can escape to convey information about such events to the outside world. 
If you should find yourself inside a black hole's event horizon, not only could you never escape but, like the star that preceded you, you would be unable to halt your inward plunge. Just what happens when you arrive at the centre of the hole nobody knows for sure. According to the general theory of relativity there is a so-called singularity there, a boundary of space and time at which the original star (and any subsequent infalling matter) is compressed to an infinite density and all the laws of physics break down.


Blogger Comments:

From the perspective of the General Theory of Relativity, viewed through Systemic Functional Linguistic Theory, at the event horizon, space intervals in the direction of the centre of the black hole contract to the extent that the geodesic trajectory of light is curved below that horizon, and time intervals (as between ticks of a clock) expand in inverse proportion to that spatial contraction.

Inside the event horizon, space intervals continue to contract in the direction of the centre of the black hole, the singularity, where space intervals hypothetically contract to zero, since a singularity is a point with no dimensions.

By the same token, time intervals inside the event horizon continue to expand, in inverse proportion to space intervals, in the direction of the singularity, where they hypothetically expand to infinity. This means that, relative to processes outside the event horizon, the processes inside the event horizon, such as the infalling of matter, take longer and longer to unfold as the matter approaches the singularity, where processes cease to unfold altogether.

On this basis, from the perspective of locations outside the event horizon, where meaning-makers are situated, matter falling towards the singularity never actually reaches it, and so is never compressed to an infinite density.

Moreover, the notion that matter is infinitely compressed at the singularity confuses matter with spatial dimensions. It is the three dimensions of space that are hypothetically "compressed" to the zero dimensions of a singular point in space.

For these reasons, from the perspective of locations outside of a black hole, a black hole is not empty of matter, and it is because of this that it "retains" its gravitational effect on the dimensions of space and time.

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