en.wikipedia.org/wiki/Horizon

One typically sees further along the Earth's curved ... to some extent, to go around the curvature of the Earth. ... distance to the horizon from an observer close to the Earth's surface is about.

dizzib.github.io/earth/curve-calc

This app calculates how much a distant object is obscured by the earth's curvature, and makes ... d0 = Target distance. miles. Calculate. d1 = Horizon distance.

dizzib.github.io/earth/curve-calc/index.html?d0=63.634&h0=3.5&unit=metric

This app calculates how much a distant object is obscured by the earth's curvature, and makes the ... d0 = Target distance. km. Calculate. d1 = Horizon distance.

blogs.discovermagazine.com/badastronomy/2009/01/15/how-far-away-is-the-horizon

Jan 15, 2009 ... but the actual distance to the horizon is the arc length of the earth surface to the point, ..... Diminished of course by the curvature of the earth.

science.howstuffworks.com/question198.htm

... large body of water is not actually flat at all -- it follows the curvature of the Earth. ... where "height above surface" is in feet and "distance to horizon" is in miles.

www.livescience.com/32111-how-far-away-is-the-horizon.html

Sep 12, 2012 ... Geometry tells us that the distance of the horizon – i.e. the farthest point the eye can see before Earth curves out beneath our view – depends ...

www.omnicalculator.com/physics/earth-curvature

The Earth curvature calculator lets you find out your distance to the horizon and the height of an object that is partially hidden behind it.

www.ringbell.co.uk/info/hdist.htm

This is a rough guide to determine the distance of the horizon based on the ... This calculation should be taken as a guide only as it assumes the earth is a ...