NASA Black Hole Visualisation

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Discussion Overview

The discussion revolves around the visualization of black holes as presented by NASA, specifically focusing on the representation of light and color changes due to gravitational effects, such as blueshift, in the simulation.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • Some participants express excitement about the NASA visualization of black holes.
  • One participant questions whether the expected blueshift of background light is visible in the simulation, suggesting that it may not be represented accurately.
  • Another participant reiterates the question about the visibility of the blueshift effect and seeks clarification from others.
  • A different participant asserts that a blueshift should be observable from certain angles, assuming visibility is not obstructed by the black hole's shadow, but is uncertain about how this is depicted in the visualizations.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the visibility of the blueshift effect in the simulation, with differing expectations and interpretations of the visual representation.

Contextual Notes

There are unresolved questions regarding the accuracy of the simulation in depicting gravitational effects on light, particularly the blueshift, and how these effects are visually represented.

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I was expecting to see the background light being blueshifted enough to be visibly changing color. Is the effect just not visible in the simulation or is my expectation wrong? In the case of crossing the event horizon the caption mentions a blueshift in excess of 43 but how is that visible? Perhaps they left out the effect to allow people get a visual feedback on how the "geometry" of the background sky is warped?
 
Filip Larsen said:
Is the effect just not visible in the simulation or is my expectation wrong?
Anyone?
 
Should definitely see blueshift from in front (so long as not obscured by the black hole shadow...). I don't know how they've incorporated this into the visualizations.
 

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