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How to limit sight distance to 1 KM

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How to limit sight distance to 1 KM

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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).

medieval weather

share|improve this question

asked 5 hours ago

NgocNgoc

1,33811021

$endgroup$

• 
  
  
  

  
  2
  

  
  
  
  
  
  

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

  
  
  
  

add a comment | 

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).

medieval weather

share|improve this question

asked 5 hours ago

NgocNgoc

1,33811021

$endgroup$

• 
  
  
  

  
  2
  

  
  
  
  
  
  

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

  
  
  
  

add a comment | 

$begingroup$

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).

medieval weather

share|improve this question

asked 5 hours ago

NgocNgoc

1,33811021

$endgroup$

share|improve this question

asked 5 hours ago

NgocNgoc

1,33811021

share|improve this question

asked 5 hours ago

NgocNgoc

1,33811021

asked 5 hours ago

NgocNgoc

1,33811021

asked 5 hours ago

NgocNgoc

1,33811021

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.

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

answered 5 hours ago

L.Dutch♦L.Dutch

85.5k28201418

$endgroup$

• 
  
  
  

  
  

  
  
  
  
  
  

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

  
  
  
  

add a comment | 

0

$begingroup$

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:

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

answered 21 mins ago

user43712user43712

1628

$endgroup$

add a comment | 

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8

$begingroup$

Air pollution can heavily limit visibility.

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

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

answered 5 hours ago

L.Dutch♦L.Dutch

85.5k28201418

$endgroup$

• 
  
  
  

  
  

  
  
  
  
  
  

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

  
  
  
  

add a comment | 

8

$begingroup$

Air pollution can heavily limit visibility.

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

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

answered 5 hours ago

L.Dutch♦L.Dutch

85.5k28201418

$endgroup$

• 
  
  
  

  
  

  
  
  
  
  
  

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

  
  
  
  

add a comment | 

$begingroup$

Air pollution can heavily limit visibility.

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

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

answered 5 hours ago

L.Dutch♦L.Dutch

85.5k28201418

$endgroup$

share|improve this answer

answered 5 hours ago

L.Dutch♦L.Dutch

85.5k28201418

answered 5 hours ago

L.Dutch♦L.Dutch

85.5k28201418

answered 5 hours ago

L.Dutch♦L.Dutch

85.5k28201418

0

$begingroup$

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:

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

answered 21 mins ago

user43712user43712

1628

$endgroup$

add a comment | 

0

$begingroup$

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:

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

answered 21 mins ago

user43712user43712

1628

$endgroup$

add a comment | 

$begingroup$

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:

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

answered 21 mins ago

user43712user43712

1628

$endgroup$

share|improve this answer

answered 21 mins ago

user43712user43712

1628

answered 21 mins ago

user43712user43712

1628

answered 21 mins ago

user43712user43712

1628