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    Re: Dip error
    From: Marcel Tschudin
    Date: 2008 Dec 5, 11:46 +0200

    On Fri, Dec 5, 2008 at 10:42 AM,   wrote:
    > There several kinds of mirages and not all form inverted images. See:
    > http://en.wikipedia.org/wiki/Mirage
    There are two situations causing these types of phenomena. A strong
    negative temperature gradient (super adiabatic lapse rate) leads to an
    inferior mirage and a strong positive temperature gradient (inversion)
    leads to a superior mirage or even to a mock mirage. In both of these
    two cases it depends on the geometrical situation between the abnormal
    temperature gradient and the observer whether there appears only a
    geometrical deformation, like towering, or a mirror image. A strong
    inversion my even lead to infinite refraction and thus to a blank or
    blind strip.
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