[Coffin, John Huntington Crane], 1815-1890. [from old catalog] · New York, D. Van Nostrand · leaf 72
uldhave from the right triangle C H Ay HA = |/(C A2-irC2), or df = V {2 B + h) h;or nearly d = V 2 B X VL Introducing the same numerical values as before, we havein statute miles d = 1.225 Vh. Comparing this with the expression above, we see thatthe distance is increased about y1^ part by… … or the sum of the distances of eachfrom the common horizon, H. By entering Table X. with theheights of the observer and the ob-ject respectively, the sum of the cor-responding distances is the distanceof the object from the observer. Thedistances in this table are in statute 5280 miles. Multiplying…
Navigation · Nautical astronomy
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