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How to limit sight distance to 1 KM


Possible distance travelled by horse over 6 weeks?How would I limit Feudalism?How to stop a tornado from hitting a major city…How much distance can a man and his daughter travel under the given constrain?How could magic cause changes in air pressure?What kind of planetary conditions would prevent or severely limit air travel?What atmospheric composition do I need to sustain Earth-like temperatures at my planet's orbital distance; how close should my asteroid belt be?How to prevent allies from acting in an organized manner?Pre-electrical fast long-distance communication using Acoustic MirrorsEnforcing a speed limit in medieval times













1












$begingroup$


My country is on the coast and spans deep into the continent. The technology level is before the invention of explosives. 10 years ago with naked eyes, anyone could see further than 10 KM away (if he/she was standing on a tall enough building). But today, the furthest anyone can see is 1 KM top.



What could possibly caused this? (non superstitious, mind you).










share|improve this question









$endgroup$








  • 3




    $begingroup$
    1KM top? stand in the centre of a big crater.
    $endgroup$
    – user6760
    5 hours ago










  • $begingroup$
    Is it 1km in all directions or just one direction? Why are explosives relevant?
    $endgroup$
    – chasly from UK
    42 secs ago
















1












$begingroup$


My country is on the coast and spans deep into the continent. The technology level is before the invention of explosives. 10 years ago with naked eyes, anyone could see further than 10 KM away (if he/she was standing on a tall enough building). But today, the furthest anyone can see is 1 KM top.



What could possibly caused this? (non superstitious, mind you).










share|improve this question









$endgroup$








  • 3




    $begingroup$
    1KM top? stand in the centre of a big crater.
    $endgroup$
    – user6760
    5 hours ago










  • $begingroup$
    Is it 1km in all directions or just one direction? Why are explosives relevant?
    $endgroup$
    – chasly from UK
    42 secs ago














1












1








1





$begingroup$


My country is on the coast and spans deep into the continent. The technology level is before the invention of explosives. 10 years ago with naked eyes, anyone could see further than 10 KM away (if he/she was standing on a tall enough building). But today, the furthest anyone can see is 1 KM top.



What could possibly caused this? (non superstitious, mind you).










share|improve this question









$endgroup$




My country is on the coast and spans deep into the continent. The technology level is before the invention of explosives. 10 years ago with naked eyes, anyone could see further than 10 KM away (if he/she was standing on a tall enough building). But today, the furthest anyone can see is 1 KM top.



What could possibly caused this? (non superstitious, mind you).







medieval weather






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked 5 hours ago









NgocNgoc

1,33811021




1,33811021








  • 3




    $begingroup$
    1KM top? stand in the centre of a big crater.
    $endgroup$
    – user6760
    5 hours ago










  • $begingroup$
    Is it 1km in all directions or just one direction? Why are explosives relevant?
    $endgroup$
    – chasly from UK
    42 secs ago














  • 3




    $begingroup$
    1KM top? stand in the centre of a big crater.
    $endgroup$
    – user6760
    5 hours ago










  • $begingroup$
    Is it 1km in all directions or just one direction? Why are explosives relevant?
    $endgroup$
    – chasly from UK
    42 secs ago








3




3




$begingroup$
1KM top? stand in the centre of a big crater.
$endgroup$
– user6760
5 hours ago




$begingroup$
1KM top? stand in the centre of a big crater.
$endgroup$
– user6760
5 hours ago












$begingroup$
Is it 1km in all directions or just one direction? Why are explosives relevant?
$endgroup$
– chasly from UK
42 secs ago




$begingroup$
Is it 1km in all directions or just one direction? Why are explosives relevant?
$endgroup$
– chasly from UK
42 secs ago










2 Answers
2






active

oldest

votes


















8












$begingroup$

Air pollution can heavily limit visibility.



Look at Beijing: in days where the smog is heavy visibility is very limited.



Beijing with and without smog



Since you are setting your world in medieval time, have a lot of coal and wood to be burned. The resulting pollution of the atmosphere will do what you are asking for.



Climate can also help: fog, lack of winds, thermal inversion can also contribute to enhance the phenomena.






share|improve this answer









$endgroup$









  • 2




    $begingroup$
    Take a look at London circa the Industrial Revolution for an example closer to the right time period.
    $endgroup$
    – Joe Bloggs
    4 hours ago





















1












$begingroup$

To add to the other answer which mentions air pollution, here's a possible cause of the pollution:



Volcanic ash.



You mentioned that your country is on the coast and that it spans into the continent. As shown by the following diagram, volcanoes occur in mostly coastal regions:



World volcano map



This means your country could have a string of volcanoes along its coast. If the general wind patterns push air into the continent from the direction of the coast, then a prolonged eruption would cause a constant influx of volcanic ash into the air of your country. This would reduce visibility.



The extent to which it does this is up to you - look at the Toba eruption, which may have caused a global cooling period of up to 1000 years. Alternatively, the volcanoes could simply be slow burning. Rather than a huge, dramatic explosion, they could constantly release ash into the air, which is dragged inland by the wind. This is all up to you of course and depends on what you want to do with the story. Hope this helps.






share|improve this answer









$endgroup$













    Your Answer





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    2 Answers
    2






    active

    oldest

    votes








    2 Answers
    2






    active

    oldest

    votes









    active

    oldest

    votes






    active

    oldest

    votes









    8












    $begingroup$

    Air pollution can heavily limit visibility.



    Look at Beijing: in days where the smog is heavy visibility is very limited.



    Beijing with and without smog



    Since you are setting your world in medieval time, have a lot of coal and wood to be burned. The resulting pollution of the atmosphere will do what you are asking for.



    Climate can also help: fog, lack of winds, thermal inversion can also contribute to enhance the phenomena.






    share|improve this answer









    $endgroup$









    • 2




      $begingroup$
      Take a look at London circa the Industrial Revolution for an example closer to the right time period.
      $endgroup$
      – Joe Bloggs
      4 hours ago


















    8












    $begingroup$

    Air pollution can heavily limit visibility.



    Look at Beijing: in days where the smog is heavy visibility is very limited.



    Beijing with and without smog



    Since you are setting your world in medieval time, have a lot of coal and wood to be burned. The resulting pollution of the atmosphere will do what you are asking for.



    Climate can also help: fog, lack of winds, thermal inversion can also contribute to enhance the phenomena.






    share|improve this answer









    $endgroup$









    • 2




      $begingroup$
      Take a look at London circa the Industrial Revolution for an example closer to the right time period.
      $endgroup$
      – Joe Bloggs
      4 hours ago
















    8












    8








    8





    $begingroup$

    Air pollution can heavily limit visibility.



    Look at Beijing: in days where the smog is heavy visibility is very limited.



    Beijing with and without smog



    Since you are setting your world in medieval time, have a lot of coal and wood to be burned. The resulting pollution of the atmosphere will do what you are asking for.



    Climate can also help: fog, lack of winds, thermal inversion can also contribute to enhance the phenomena.






    share|improve this answer









    $endgroup$



    Air pollution can heavily limit visibility.



    Look at Beijing: in days where the smog is heavy visibility is very limited.



    Beijing with and without smog



    Since you are setting your world in medieval time, have a lot of coal and wood to be burned. The resulting pollution of the atmosphere will do what you are asking for.



    Climate can also help: fog, lack of winds, thermal inversion can also contribute to enhance the phenomena.







    share|improve this answer












    share|improve this answer



    share|improve this answer










    answered 5 hours ago









    L.DutchL.Dutch

    85.5k28201418




    85.5k28201418








    • 2




      $begingroup$
      Take a look at London circa the Industrial Revolution for an example closer to the right time period.
      $endgroup$
      – Joe Bloggs
      4 hours ago
















    • 2




      $begingroup$
      Take a look at London circa the Industrial Revolution for an example closer to the right time period.
      $endgroup$
      – Joe Bloggs
      4 hours ago










    2




    2




    $begingroup$
    Take a look at London circa the Industrial Revolution for an example closer to the right time period.
    $endgroup$
    – Joe Bloggs
    4 hours ago






    $begingroup$
    Take a look at London circa the Industrial Revolution for an example closer to the right time period.
    $endgroup$
    – Joe Bloggs
    4 hours ago













    1












    $begingroup$

    To add to the other answer which mentions air pollution, here's a possible cause of the pollution:



    Volcanic ash.



    You mentioned that your country is on the coast and that it spans into the continent. As shown by the following diagram, volcanoes occur in mostly coastal regions:



    World volcano map



    This means your country could have a string of volcanoes along its coast. If the general wind patterns push air into the continent from the direction of the coast, then a prolonged eruption would cause a constant influx of volcanic ash into the air of your country. This would reduce visibility.



    The extent to which it does this is up to you - look at the Toba eruption, which may have caused a global cooling period of up to 1000 years. Alternatively, the volcanoes could simply be slow burning. Rather than a huge, dramatic explosion, they could constantly release ash into the air, which is dragged inland by the wind. This is all up to you of course and depends on what you want to do with the story. Hope this helps.






    share|improve this answer









    $endgroup$


















      1












      $begingroup$

      To add to the other answer which mentions air pollution, here's a possible cause of the pollution:



      Volcanic ash.



      You mentioned that your country is on the coast and that it spans into the continent. As shown by the following diagram, volcanoes occur in mostly coastal regions:



      World volcano map



      This means your country could have a string of volcanoes along its coast. If the general wind patterns push air into the continent from the direction of the coast, then a prolonged eruption would cause a constant influx of volcanic ash into the air of your country. This would reduce visibility.



      The extent to which it does this is up to you - look at the Toba eruption, which may have caused a global cooling period of up to 1000 years. Alternatively, the volcanoes could simply be slow burning. Rather than a huge, dramatic explosion, they could constantly release ash into the air, which is dragged inland by the wind. This is all up to you of course and depends on what you want to do with the story. Hope this helps.






      share|improve this answer









      $endgroup$
















        1












        1








        1





        $begingroup$

        To add to the other answer which mentions air pollution, here's a possible cause of the pollution:



        Volcanic ash.



        You mentioned that your country is on the coast and that it spans into the continent. As shown by the following diagram, volcanoes occur in mostly coastal regions:



        World volcano map



        This means your country could have a string of volcanoes along its coast. If the general wind patterns push air into the continent from the direction of the coast, then a prolonged eruption would cause a constant influx of volcanic ash into the air of your country. This would reduce visibility.



        The extent to which it does this is up to you - look at the Toba eruption, which may have caused a global cooling period of up to 1000 years. Alternatively, the volcanoes could simply be slow burning. Rather than a huge, dramatic explosion, they could constantly release ash into the air, which is dragged inland by the wind. This is all up to you of course and depends on what you want to do with the story. Hope this helps.






        share|improve this answer









        $endgroup$



        To add to the other answer which mentions air pollution, here's a possible cause of the pollution:



        Volcanic ash.



        You mentioned that your country is on the coast and that it spans into the continent. As shown by the following diagram, volcanoes occur in mostly coastal regions:



        World volcano map



        This means your country could have a string of volcanoes along its coast. If the general wind patterns push air into the continent from the direction of the coast, then a prolonged eruption would cause a constant influx of volcanic ash into the air of your country. This would reduce visibility.



        The extent to which it does this is up to you - look at the Toba eruption, which may have caused a global cooling period of up to 1000 years. Alternatively, the volcanoes could simply be slow burning. Rather than a huge, dramatic explosion, they could constantly release ash into the air, which is dragged inland by the wind. This is all up to you of course and depends on what you want to do with the story. Hope this helps.







        share|improve this answer












        share|improve this answer



        share|improve this answer










        answered 43 mins ago









        user43712user43712

        1728




        1728






























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