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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Question on Applied Ballistics App and Coriolis
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<blockquote data-quote="Pdvdh" data-source="post: 1188402" data-attributes="member: 4191"><p>I got my hands on a globe. Looked at it last evening and could "sorta" visualize the horizontal coriolis, but I still wasn't getting the full perspective.</p><p></p><p>I just finished looking it over again and this time, <strong>bingo</strong>! If you have access to a globe, hold a planar straight edge <strong>perpendicular</strong> to the the surface of the globe, with east to west alignment, along the latitude lines printed on the globe. Then shift the planar straight edge from the equator up to the pole along the latitude lines, and watch how the latitude lines bend off at an increasingly greater angle from the straight edge as the straight edge approaches the pole (90* Latitude).</p><p></p><p>What made the huge difference for me was the perspective of holding the straight edge <strong>perpendicular</strong> to the globe (parallel to gravitational force) and then looking right along the planar straight edge - directly down onto the surface of the globe. The light bulb got much brighter! lightbulb </p><p></p><p>This perspective completely obliterated my prior mental block. And from this perspective, horizontal coriolis really is easier to visualize than vertical coriolis. Pretty sure I'll never ever have a problem visualizing the cause of horizontal coriolis - again.</p><p></p><p>I imagine it would be plain as day from the international space station, if latitude lines were visible on the ground surface of earth, and the earth rotated along its N-S axis.</p></blockquote><p></p>
[QUOTE="Pdvdh, post: 1188402, member: 4191"] I got my hands on a globe. Looked at it last evening and could "sorta" visualize the horizontal coriolis, but I still wasn't getting the full perspective. I just finished looking it over again and this time, [B]bingo[/B]! If you have access to a globe, hold a planar straight edge [B]perpendicular[/B] to the the surface of the globe, with east to west alignment, along the latitude lines printed on the globe. Then shift the planar straight edge from the equator up to the pole along the latitude lines, and watch how the latitude lines bend off at an increasingly greater angle from the straight edge as the straight edge approaches the pole (90* Latitude). What made the huge difference for me was the perspective of holding the straight edge [B]perpendicular[/B] to the globe (parallel to gravitational force) and then looking right along the planar straight edge - directly down onto the surface of the globe. The light bulb got much brighter! lightbulb This perspective completely obliterated my prior mental block. And from this perspective, horizontal coriolis really is easier to visualize than vertical coriolis. Pretty sure I'll never ever have a problem visualizing the cause of horizontal coriolis - again. I imagine it would be plain as day from the international space station, if latitude lines were visible on the ground surface of earth, and the earth rotated along its N-S axis. [/QUOTE]
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Question on Applied Ballistics App and Coriolis
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