Horizon

[kingofbedsit]

How far into the Horizon can we look before the earths curvature takes effect.

[pinus]

child's guide here http://www.boatsafe.com/kids/distance.htm

[bernardo]

It depends how tall you are. Five feet above the ground would put the horizon about 2 miles away.

[pit]

Not sure what you mean, but all horizons are curved if only very slightly. Obviously, the higher you go in a balloon or a plane, the curavature of the earth becomes more evident.

[ianess]

not sure of exact answer but if you`ve ever been on a flight at around 30000ft the curvature of the earth is quite dramatic, especially as the sun is setting.

[Quizmonster]

If you're of average height and standing at the water's edge, the horizon is about 3 miles away. If you click here, that will link you to a web-page which has a handy computer that works the maths out for you. All you do is put the height of your eye above water-level into the slot and click on 'Compute'. So, if you're eyes are 5 ft 6 inches above the ground - ie 5.5 ft - put that into the slot. If you are standing on a 100 ft cliff, enter 105.5.

As Pit says, the higher you go the more obvious the curvature becomes.