Quote:
Originally Posted by killwilly  I read an article not so long ago regarding this subject. The conclusion was,due to the curvature of the earth,at ground level the horizon is approximately 20 miles.
If I can find the article I will post it here. |
I took the calculation from
Wikipedia's description of the Horizon. According to this formula, if you're stood at sea level then the distance to the 'true horizon' is only 3 miles (rounded up).
As an example, on a clear day I can see the Isle of Skye from a beach near to us. The northern tip of Skye is 35 miles away but if I look through binoculars at Skye then I can't see the base of the cliffs because they are below the horizon. What I can see if the top third of the cliffs that protrude above the horizon.
So this tells me that the visibility is more than 35 miles but it doesn't mean that the horizon is 35 miles away.
