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<p>[QUOTE=&quot;-jeffB, post: 2765237, member: 27832&quot;]Problem is, &quot;common sense&quot; really only gets you so far when it comes to rheology. <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie1" alt=":)" unselectable="on" unselectable="on" /> Newton covered the &quot;common-sense&quot; parts, but there&#039;s a reason why so many fluids are called &quot;non-Newtonian&quot;.</p><p><br /></p><p>Since I haven&#039;t even taken the classes, never mind worked in the field, I can&#039;t help much with those non-common-sense aspects. But taking Doug&#039;s point about particles, let me ask this: isn&#039;t there a good chance that a trickle of <i>thin, not very viscous</i> liquid, running <i>across</i> machinery where some parts are covered with grease, but others covered with <i>dust</i>, might actually pick up <i>more</i> particles (per unit volume) than the grease has?</p><p><br /></p><p>The answer, of course, is &quot;who knows?&quot; I don&#039;t know where the water would come from, what it would run across to get to the planchet, and how much debris it would pick up along the way. But I have just as much right to speculate as the next guy. <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie2" alt=";)" unselectable="on" unselectable="on" />[/QUOTE]</p><p><br /></p>

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