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Specifically, at human eye level -- (like if the planet is larger or smaller).

Does anyone know if this can be described in terms of a formula?

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closed as off-topic by Mołot, Hohmannfan, Azuaron, sphennings, L.Dutch May 8 '17 at 13:36

This question appears to be off-topic. The users who voted to close gave this specific reason:

  • "This question does not appear to be about worldbuilding, within the scope defined in the help center." – Mołot, Hohmannfan, Azuaron, sphennings, L.Dutch
If this question can be reworded to fit the rules in the help center, please edit the question.

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    $\begingroup$ Welcome to Worldbuilding! Please start with the tour and look around at the kinds of posts we have here. $\endgroup$ – JDługosz May 8 '17 at 5:26
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    $\begingroup$ I recomend The Articule "Distance to the Horizon" by Andrew T. Young at the San Diego State University - It is concise and covers refractions which many articles on the topic disregard. You may also be interested in Fata Morgana $\endgroup$ – Theraot May 8 '17 at 6:18
  • $\begingroup$ for people voting too broad - it requires just a formula and it exists, thus the answer need one sentence to answer. $\endgroup$ – MolbOrg May 8 '17 at 12:47
  • $\begingroup$ @MolbOrg All the (current) close votes are because it's off-topic. $\endgroup$ – Azuaron May 8 '17 at 13:04
  • $\begingroup$ @Azuaron I guess it was one person, just didn't voted to close the question, so haven't seen the numbers. Sure it is school question and it can be googled in 5-10-15 minutes, the only guilt of the question, but not off-topic either :). I guess it could be a help for some writer, they are usually not so steady in math and all that. And I like how the answer shows the beauty of geometry :) $\endgroup$ – MolbOrg May 8 '17 at 16:21
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Yes.

geometry

The formula, generalizing for planet size, can be found on Wikipedia.

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    $\begingroup$ Your answer is in another castle: when is an answer not an answer? $\endgroup$ – a CVn May 8 '17 at 5:35
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    $\begingroup$ Did you «Close or flag the question and move on» as it shows in the post you linked? I don’t see the question on review queues. $\endgroup$ – JDługosz May 8 '17 at 5:40
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    $\begingroup$ IIRC flagged posts don't show up for diamond moderators in the review queues until after a while, to give the community a chance to handle the flag first. And while the question might not be great, it's hardly terrible, especially from a newcomer; you, though, should know better what makes a good answer. $\endgroup$ – a CVn May 8 '17 at 5:41
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    $\begingroup$ @JDługosz If you believe a question needs to be flagged, please don't answer it; it only encourages people to write bad questions. $\endgroup$ – Azuaron May 8 '17 at 17:38

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