Horizon Distance
I know that I should know this, however, to settle a 'discussion'
I sit here in my Spanish Apartment at about 300m ASL with a clear, unobstructed view of the Med.
Unlike today, when I can't actually see the sea, vis is only about 5Km at the moment, the night before last was spectacularly clear.
Pal from lower apartment emerged and declared that Africa was visible on the horizon, a statement that I viewed with some scepticism, and I announced that the 'land' visible was in fact clouds at the horizon. A heated debate ensued and we agreed to differ.
So to my question, just how far away is the visible horizon when viewed from 300m assuming unlimited visibility ?