• MartianSands@sh.itjust.works
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    20 hours ago

    That’s misleading. The shortest route would be the “great circular” joining the two points, which lines of latitude definitely are not.

    The only line of latitude which is a great circle is the equator.

    • bisby@lemmy.world
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      10 hours ago

      I never said the shortest route. a plane flying “in a straight line west to east” would show up as as a curve on the map was all I was trying to convey. It’s possible this plane’s bearing doesn’t drastically change throughout this flight. “Straight lines” get real messy when you convert a sphere into a 2d projection for maps.

      Then a further addition that there are other reasons to not fly in a direct straight line anyway. “Shortest route direct A to B” is an ideal condition, and the world is an always an ideal place.

      • MartianSands@sh.itjust.works
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        8 hours ago

        “shortest route” and “straight line” actually mean pretty much the same thing. The shortest route is the straight line. Sorry if I confused the matter by switching up the terminology.

        Flying parallel to the lines of latitude would mean that your bearing doesn’t change much, sure, but flying in a straight line would require your heading to change continuously.

        The aircraft in the screenshot was flying a very not-straight course