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    Re: Bris does not work
    From: Greg Rudzinski
    Date: 2012 Jul 26, 10:04 -0700


    >Do you mean that the glue can somehow fog up
    >the surfaces that have no contact with glue??

    Yes Alex. Some adhesives seem to do this.

    >How many images do your self-made Bris make?

    I get 8 images of the Sun when no shading is used. In groups of 2, 3, and 3.


    Greg Rudzinski

    [NavList] Re: Bris does not work
    From: Alexandre Eremenko
    Date: 26 Jul 2012 12:50
    Greg,

    > On the homemade versions of the Bris I stopped using superglue
    > because it would strangely fog up over time. The superglue would also
    > come apart after extreme temperature changes. The substitute adhesive is
    > clear lacquer (nail polish) which hasn't fogged or come apart yet.

    I don't know what glue is used in the original Bris.
    It seems to hold well. Do you mean that the glue can somehow fog up
    the surfaces that have no contact with glue??

    (very clear magnified photos of the original version are
    available on my web site:
    http://www.math.purdue.edu/~eremenko/Navigation/Sextants/Bris/
    )
    Alex.


    P.S. How many images do your self-made Bris make?


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