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Long Range Hunting & Shooting
spin drift & Coriolis effect
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<blockquote data-quote="Imho" data-source="post: 489735" data-attributes="member: 32070"><p>Although your reasoning seems logical, the actual forces at work result in the opposite effect.</p><p></p><p>People quite commonly refer to the Coriolis Effect when talking about two separate effects, the actual Coriolis Effect and the Eötvös Effect.</p><p></p><p>At the risk of over simplifying things, the Coriolis Effect refers to the projectile (seemingly) deflecting horizontally and the Eötvös Effect refers to the projectile deflecting vertically.</p><p></p><p>In short, the Eötvös Effect results in Eastward moving objects having less gravitational force applied over their journey (in the case of a projectile the POI will therefore be high in relation to the POA), and Westward moving objects having more gravitational force applied (and therefore the POI will be low in relation to the POA).</p><p></p><p>I'm no expert, so I hope I've explained this correctly. The actual mechanics behind the "forces" at work really does my head in.</p><p></p><p>Just knowing that these factors exist is probably enough for most. Leave the mechanics to the physicists and actual values to ballistic software. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p><p></p><p></p><p> </p><p>Exactly.</p></blockquote><p></p>
[QUOTE="Imho, post: 489735, member: 32070"] Although your reasoning seems logical, the actual forces at work result in the opposite effect. People quite commonly refer to the Coriolis Effect when talking about two separate effects, the actual Coriolis Effect and the Eötvös Effect. At the risk of over simplifying things, the Coriolis Effect refers to the projectile (seemingly) deflecting horizontally and the Eötvös Effect refers to the projectile deflecting vertically. In short, the Eötvös Effect results in Eastward moving objects having less gravitational force applied over their journey (in the case of a projectile the POI will therefore be high in relation to the POA), and Westward moving objects having more gravitational force applied (and therefore the POI will be low in relation to the POA). I'm no expert, so I hope I've explained this correctly. The actual mechanics behind the "forces" at work really does my head in. Just knowing that these factors exist is probably enough for most. Leave the mechanics to the physicists and actual values to ballistic software. :) Exactly. [/QUOTE]
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