Horizon
Contains ads
1K+
Downloads
Everyone
info
About this app
This is a simple app that calculates the distance to the horizon from the height of your location.
Intuitively, a person would expect that curvature of the Earth is unnoticeable in everyday life. However, it is interesting to note that after you had a walk of 5 km straight, your path actually also went "down" 2 metres because of the roundness of the planet. This can also be seen while watching distant boats using binoculars where you might notice that their bottom is "missing" below the horizon. It is well known that ancient Greek scholar Eratosthenes calculated the circumference of the Earth almost correctly based on similar curvature observations alone.
The best app usage results are of course at seashore locations, or in the large plains. Hills, mountains and other visual obstacles are not considered.
App also works excellent from an airplane. When watching the scenery from such a height, it is surprising how much one can misjudge the distance to the objects on the ground.
App can use GPS to detect height, but height accuracy of GPS seems not very high on the ground level. GPS height however works great in the airplane where height error influence is negligible.
Distance shown is the "walking" distance on the ideal round surface to the horizon. It is not the straight line from your eyes to the horizon.
DISCLAIMER: Use GPS in an airplane only with permission from the flight crew. Also, believers in flat Earth theory please be warned that this app may spoil your illusions or even break your heart.
Intuitively, a person would expect that curvature of the Earth is unnoticeable in everyday life. However, it is interesting to note that after you had a walk of 5 km straight, your path actually also went "down" 2 metres because of the roundness of the planet. This can also be seen while watching distant boats using binoculars where you might notice that their bottom is "missing" below the horizon. It is well known that ancient Greek scholar Eratosthenes calculated the circumference of the Earth almost correctly based on similar curvature observations alone.
The best app usage results are of course at seashore locations, or in the large plains. Hills, mountains and other visual obstacles are not considered.
App also works excellent from an airplane. When watching the scenery from such a height, it is surprising how much one can misjudge the distance to the objects on the ground.
App can use GPS to detect height, but height accuracy of GPS seems not very high on the ground level. GPS height however works great in the airplane where height error influence is negligible.
Distance shown is the "walking" distance on the ideal round surface to the horizon. It is not the straight line from your eyes to the horizon.
DISCLAIMER: Use GPS in an airplane only with permission from the flight crew. Also, believers in flat Earth theory please be warned that this app may spoil your illusions or even break your heart.
Updated on
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No data shared with third parties
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No data collected
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What’s new
v2.12
- updated to Android 14
- dependency updates
v2.11
- dependency updates
v2.10
- updated to Android 13
- scrolling numbers bugfix
v2.8
- updated crash reporting system
v2.7
- Added use of Imperial units
- Added usage instructions
- Improvements to user interaction and interface
- Android related updates
- updated to Android 14
- dependency updates
v2.11
- dependency updates
v2.10
- updated to Android 13
- scrolling numbers bugfix
v2.8
- updated crash reporting system
v2.7
- Added use of Imperial units
- Added usage instructions
- Improvements to user interaction and interface
- Android related updates
App support
About the developer
Vladimir Milosevic
developer.vm.mc@gmail.com
55, Sinan Bin Khadim Al Muhairi St, Al Bateen, Abu Dhabi 200
Marasy (5) 5010
أبو ظبي
United Arab Emirates
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