Tertiary Glass-Sphere Bow

I have discovered a spectral reflection phenomenon inside a transparent plexiglass-sphere. The phenomenon, of which I am almost sure it is NOT the equivalent of the Primary or Secondary Rainbow, is in fact the equivalent of the Tertiary Rainbow, visible as a bright illuminating spectral colored ring all along the limb of the sphere. To see this ring, one should look “from behind” the sphere, toward the sun, with the sun “in front” of it (appearing exactly “in the centre” of the sphere).

The photo show the sphere with appearance of the red component of the spectrum. The distance of the observing eye (or camera’s lens) to the sphere is VERY important, because the focal point of the ring is not a point, it’s a spectral colored line (red at the far end, blue at the near end).

As far as I know, no one has ever observed or photographed the ring-like appearance of, what I call, the Tertiary Glass-sphere Bow (which has a focal point or “line”, behind the globe!).

Author: Danny Caes, Ghent-Belgium

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Posted on May 27, 2011, in experimental, rainbow and fogbow, theory and tagged , , , , . Bookmark the permalink. 1 Comment.

  1. Ernesto Dávila González

    It is very important for me to talk to you because in my thoughts about what in reality is what we call space I have been thinking that the black hole is convergent field that at its center ignites a process that has its focal point not at it center but at its limb; a focal point that is not a point but the logic expression of a divergent field. Please I want to know from you.

    Your friend, Ernesto Dávila González from Puerto Rico and my Tel. number is 787 593 7722

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