If you were on a perfectly flat plane

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Discussion Overview

The discussion explores the visual perception and characteristics of an infinite flat plane extending in all directions. Participants consider how such a scenario would affect what one could see, taking into account the limitations of human vision and the nature of infinity.

Discussion Character

  • Exploratory, Conceptual clarification, Debate/contested

Main Points Raised

  • One participant suggests that the angle of view would be too small to resolve the edge of the plane, comparing it to the appearance of the ocean.
  • Another participant argues that because the plane is infinite, one would only see a horizon where the ground meets the sky, regardless of the direction faced.
  • A different viewpoint emphasizes that standing on an infinite plain means always being at the center, implying a consistent perspective no matter the movement.
  • One participant likens the visual experience to looking at a painted grid on the plane, where lines converge at the horizon, leading to a perception of emptiness beyond a certain point.

Areas of Agreement / Disagreement

Participants express differing views on the implications of an infinite plane on visual perception, with no consensus reached on the exact nature of what one would see.

Contextual Notes

Limitations include assumptions about human vision, the nature of infinity, and the lack of physical objects in the scenario that could influence perception.

CombustionMan
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..that went an infinite distance in all directions:
What would it look like?
Would you technically be able to see all (or a lot) of it? (speed of light permitting)

It's just a question that has been bugging me for a while.
 
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No, the angle will be so small that your eyeball cannot resolve the edge. It will look like the ocean.
 
You said there is infinite distance in all directions so in technical terms, you can't see "all" of it because infinite is going on forever with no boundaries and because it is infinite, there is nothing else past the plains so you will only see a horizon where the ground seems to meet the sky.

If you are in an infinite plain with no plants, then no matter where you stand and in what direction you stand, your view will always be the same. I think it would be similar to how a desert plain looks, like in this picture:
http://murmeli.files.wordpress.com/2007/03/plain-desert.jpg
 
And no matter how far you moved, you would always be at the centre of the plane :wink:
 
It's the same issue you have when looking at anything: the further you look, the wider your field of view gets, but the smaller the individual things you see appear. If you'd imagine the plane you were standing on was painted with a black grid on it, all the lines would converge at the horizon until it's all just black for you.
 

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