Horizon Calculator
Fill in the information and then click on button.
Enter:
Eye Level Height = 5280 feet
Enter:
Radius of the Earth = 3959 miles
Answer:
Distance to Horizon = Miles = 88.98876333560322 miles
Answer:
Distance to Horizon = Feet = 469860.670411985 feet
Formula used here:
Let d*d = 2*R*h + h*h
=> d = SqRt(2*R*h + h*h)
R = 3959 miles
h = 30/5280 miles
This is distance to tangent of circle!
When d = 89 miles you will notice
that h = 1 mile!
So every time you travel 89 miles
you should drop 1 mile because of the
curve of the earth!
=> C = 2*Pi*R = 24875 miles
=> 24875/89 = 280 pie slices
=> if you traveled
1/4 of the circle = 6218.75 miles
=> 280/4 = 70 pie slices (each a mile drop)
=> 70 mile drop which cannot be right.
Since 1/4 of the circle would result
in a drop of the Radius = 3959 miles?
Rule of thumb approximation:
Let h = eye level height = feet
Nautical miles d = 1.17*(SqRt(h))
1 N.Mile = 6076 feet and 1 S.Mile = 5280 feet
Enter:
Distance in Miles = 89 miles traveled
Enter:
Radius of the Earth = 3959 miles
Answer:
Height = Miles = 1.000505305742081 miles
Answer:
Height = Feet = 5282.6680143181875 feet
Formula used here:
Let h*h = R*R - d*d
=> h = SqRt(R*R - d*d)
R = 3959 miles
d = 12 miles
This is distance from chord to circle!
Enter:
Drone Height = 50 feet
Enter:
Radius of the Earth = 3959 miles
Enter:
Height of Sun at sunset = .5 degrees
Answer:
Distance to Horizon = miles
Answer:
Speed of Sun = Miles per 3 minutes
Answer:
Speed of Sun = Feet per Second
Answer:
Speed of Sun = Miles per Hour
This is Feet per Second Straight Up!