File:Calculation for How Much of a Distant Object is Visible to Observer.jpg
Summary
| Description |
English: This figure provides calculations for how much of a distant object is visible to an observer.
Measurements are given in feet and miles. An example is given for an observer (ho) with eye level of 6 feet above sea level, to a lighthouse 130 feet above sea level (h2), 15 miles away (do) from observer. Earth's radius is assumed to be 3,960 miles. Atmospheric refraction is not taken into account. |
| Date | |
| Source | Own work |
| Author | Jim slater307 |
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