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Jeff wrote:
Edgar wrote: I particularly enjoyed his efforts to convince us that he could prove by trigonometry that a piston travelled further on the upstroke than the downstroke (or maybe it was vice versa) Edgar, sorry to burst your bubble, but this was one case where jaxie was right! The piston travel from 90 degrees to 270 degrees is different from 270 to 90 degrees. This is one of the "bar puzzles" that is counter-intuitive, since we would normally think in terms of upstroke versus downstroke, or 0-180 versus 180-0, which is quite different from "top of cycle" versus "bottom of cycle." (I suppose it depends on which bar you hang out in...) Actually, IIRC the discussion should have had to do with piston velocity, but jaxie lured Nav into this trap. Jaxie had a few of these, a few of them correct, like catenaries, and most bogus, like his understanding of Einstein. ...and his fictitional dates that he picked up at "21".... |
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