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    Re: Slide rule choice, had been Shooting Mercury
    From: Gary LaPook
    Date: 2013 May 30, 23:21 -0700
    Ignore the link after the "and" I don't know how I got that in there. [deleted]

    gl

    --- On Thu, 5/30/13, Gary LaPook <garylapook@pacbell.net> wrote:

    From: Gary LaPook <garylapook@pacbell.net>
    Subject: [NavList] Re: Slide rule choice, had been Shooting Mercury
    To: garylapook@pacbell.net
    Date: Thursday, May 30, 2013, 11:11 PM


    We discussed the choice of slide rules back in 2011 and in 2009. See:


    http://fer3.com/arc/m2.aspx/Selection-slide-rules-compendium-messages-LaPook-nov-2011-g17484

    http://fer3.com/arc/m2.aspx/Selection-slide-rules-compendium-messages-LaPook-nov-2011-g17504

    http://www.fer3.com/arc/sort2.aspx?y=201111su&y2=201111&author=&subject=

    http://fer3.com/arc/m2.aspx/recommendation-for-slide-rule-LaPook-may-2009-g8346

    http://www.fer3.com/arc/sort2.aspx?y=200905su&y2=200905&author=&subject=




    --- On Wed, 5/29/13, Rommel John Miller <rommeljmiller{at}comcast.net> wrote:

    From: Rommel John Miller <rommeljmiller{at}comcast.net>
    Subject: [NavList] Re: Shooting Mercury
    To: garylapook{at}pacbell.net
    Date: Wednesday, May 29, 2013, 6:27 PM


    Alan, you make a very valid and cogent point. A nice inexpensive solar powered that'll operate on just about any source of light is always a good thing to have around.

    But a slide rule can be fun if only due to its being arcane. They a fun to tinker with when you get bored, taking out a copy of "101 Problems for Celestial Navigation" and working them long hand and checking them on the rule.

    But consider this: NASA had great mechanical computers to call upon when Wernher von Braun designed, tested and flew the Apollo crafts, but in the end, and I am referring here to the ill-fated Apollo 13 mission, what did the engineers and the geeks at mission control rely on for those quickly need on the spot and reliable answers? The Pickett N600-ES check out http://airandspace.si.edu/collections/artifact.cfm?id=A19840160000, it appears that Jack Swigert, the engineer and pilot of Apollo 13's CM pulled his N600-ES out to verify the findings of mission control. Not from the movie, but an historical fact.

    and if a slide can save three men virtually stranded in space, it is good enough for me and my mundane earthly equations. Of course, I am an idiot for the versatile Math CAD program called Mathematica now in version 9.0 too, so I am not completely a Luddite, I just play one on TV. And speaking in nautical terms I am a relative Luddite. Now, can anyone tell me an inexpensive source for relative bearing grease?
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