ever since the sextant came into general use. It is a matter of common occurrence for mist or fog to obscure or shroud the horizon and thus render an observation impossible though the sun or the ...

Here are a few examples that show how a sextant can be used to find location ... do is measure the angle between the horizon and the sun when the sun is at its highest point, which is right ...

What you see when this happens is one object (the sun) superimposed on the other (the horizon). The angle between the two objects is then read off the scale. What makes a sextant so useful in ...

Clockwise from left: Lindbergh’s sun lines of position, plotted from Washington, D.C., to New York to Michigan; Weems’ personal log; the bubble sextant used in Lindbergh’s training ...

Sextants use a similar premise to astrolabes ... Instead, you must measure the angle of the Sun at noon or the Polaris star ...