Infinite Plane Telescope's View of Faraway Person

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Discussion Overview

The discussion revolves around the hypothetical scenario of observing a person on an infinitely flat plane using an infinitely powerful telescope. Participants explore the implications of visibility over vast distances and the concept of the horizon in this context.

Discussion Character

  • Exploratory
  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • One participant questions whether the horizon would block the telescope's view of another person billions of miles away.
  • Another participant seeks clarification on the meaning of "horizon" in this scenario.
  • It is noted that electromagnetic (EM) waves have a cancellation effect at low heights, potentially affecting visibility.
  • Some participants suggest that there would appear to be a horizon on a flat plane, which could create a band of darkness around it.
  • There is a discussion about how the perceived elevation of the horizon changes based on the observer's height.
  • One participant explains that a band of darkness could be created by wave interference, comparing it to the principle of "flying under the radar."
  • A later reply asserts that, theoretically, one would have line of sight to the person, but acknowledges numerous real-world factors that would complicate visibility.

Areas of Agreement / Disagreement

Participants express differing views on the implications of the horizon and visibility, with no consensus reached regarding the effects of the horizon on visibility in this hypothetical scenario.

Contextual Notes

Participants discuss various assumptions about the nature of the horizon and visibility, including the effects of height and wave behavior, without resolving these complexities.

Ravilochana das
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If I were on an infinitely flat plane and had an infinitely powerful telescope, could i see another person through that telescope standing on that same plane billions of miles away? is it true that the horizon would never block the telescopes view of the other person even though he is billions of miles away?
 
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Ravilochana das said:
is it true that the horizon would never block the telescopes view
Whats the "horizon means in here"
 
I see, thanks Ryan.
 
Ravilochana das said:
I see, thanks Ryan.
When EM waves propagate across a metal surface, there is a cancellation effect at low heights. So you would not be able to see anything below a certain angle of elevation.
 
RyanH42 said:
Whats the "horizon means in here"
you would see what looks like a horizon if you were on a flat plane
 
Ravilochana das said:
you would see what looks like a horizon if you were on a flat plane
As far as I can imagine, there would be a narrow strip of darkness around the horizon. So it would look like a horizon but slightly elevated.
 
tech99 said:
As far as I can imagine, there would be a narrow strip of darkness around the horizon. So it would look like a horizon but slightly elevated.
if you were laying down it would seem less elevated
 
Ravilochana das said:
if you were laying down it would seem less elevated
The lower you are, the higher the band of darkness.
 
tech99 said:
The lower you are, the higher the band of darkness.
what would create a band of darkness?
 
  • #10
Ravilochana das said:
what would create a band of darkness?
The wave reflected from the sheet will cancel the direct wave. It is like the principle of flying under the radar.
 
  • #11
tech99 said:
The wave reflected from the sheet will cancel the direct wave. It is like the principle of flying under the radar.
oh
 
  • #12
The basic answer is yes, you would be able to see the person because you have line of sight to them. There are MANY reasons why you wouldn't be able to see them a billion miles away in the real world and many more ways of getting around these problems, none of which are relevant to this particular question.
 

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