Thursday 17 November 2022

Time At The Event Horizon Of A Black Hole Viewed Through Systemic Functional Linguistics

Davies & Gribbin (1992: 264):
As you approach the event horizon of a black hole from the outside, so the flow of time in your vicinity slows down more and more as measured by a distant observer. However, the observer who crosses into the hole through the event horizon notices nothing unusual — the event horizon has no local significance — even though at the boundary the time warp becomes infinite. To an outside observer, it will appear to take you forever to reach the event horizon; in a sense, time at the surface of a black hole stands still relative to the time experienced by a distant observer. So anything that happens to you inside the hole lies beyond the infinite future as far as the outside Universe is concerned.


Blogger Comments:

From the perspective of the General Theory of Relativity, viewed through Systemic Functional Linguistic Theory, time neither flows, nor slows down, nor stands still, nor becomes warped. Approaching the event horizon of a black hole, it is the unfolding of processes that slows down, relative to the unfolding of processes at the location of a distant observer, as time intervals (between ticks of a clock) increasingly expand with increasing spatial proximity to the centre of mass.

But processes do not cease to unfold at the event horizon, because such a scenario corresponds to the expansion of time intervals to infinity, which corresponds to the contraction of space intervals to zero at the singularity. 

At the event horizon, space intervals, in the direction of the singularity, are only contracted to an extent that is sufficient to curve the geodesic of light within the event horizon. This means that time intervals at the event horizon are finite, not infinite (since space and time intervals are inversely proportional), and consequently, that processes do indeed unfold at the event horizon, relative to the unfolding of processes at distant locations.

Moreover, processes continue to unfold inside the event horizon, taking longer and longer, relative to the unfolding of processes outside the event horizon, as time intervals expand with increasing proximity to the singularity, though such processes are not observable from outside, since the means of observing them, light, is confined within the event horizon.

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