![]() Response last updated by gtho4 on Apr 09 2023. ~bcd/shadowworld/info/horizon.html no longer exists He can see as far away as 13 kilometers (approximately). Subtract Re 2 from both sides: d 2 h 2 + 2hRe. Expand the right hand side: d 2 + Re 2 h 2 + 2hRe + Re 2. ![]() Now we can use simple algebra to isolate the distance to the horizon (d). Using the Pythagorean theorem, we know: d 2 + Re 2 (h + Re) 2. The altitude is how many degrees above (if positive) or below (if negative) the horizon Point B is when seen from Point A. Ut'kikk is currently located up in the main mast, 12 metres above sea level. Re - the radius of the Earth at the horizon point. The skies are clear and visibility is excellent. The distance to the horizon is simply an upper limit to how far away it is physically possible to see - other circumstances may very well restrict this much further.Įxample Ut'kikk has been placed in the tops of a sailing ship to keep a look out. The calculators also calculates the radio horizon. NOTES (v0.0.6): Calculations assume equal elevation terrain, clear line of sight. Note that obstructions or poor visibility might further restrict how far an observer can see. This line of sight calculator calculates how far the horizon is from an antenna placed at a particular height. How to Measure Sunset Time Stretch Your Hand Out in Front of You Line Up Your Pinky With the Horizon Count How Many Fingers Between the Horizon and the Sun. The second coloumn then tells you how far away the horizon is. Look this number up in the first coloumn in the below table. Nautical twilight represents the time the Sun takes a pass from -6 to -12 below the horizon, in this period are distinguished horizon line and the main stars. ![]() If the observer is standing on the surface of the ocean, his eyes might typically be somewhere between 140 and 200 centimeters above sea level. In order to determine how far away the horizon is for any given observer, first determine how far above sea level the observer's eyes are. ![]()
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