How can I explain the mirage created from two parabolic mirrors?

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A user seeks detailed information on how a mirage is created between two parabolic mirrors, particularly when one is open. They reference a specific device that illustrates this phenomenon. After some research, they found several websites discussing the geometry involved in the parabolic mirror illusion. The user expresses gratitude for the assistance received. This discussion highlights the intersection of optics and geometry in understanding mirage effects.
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Hi. I would like to know where can I find detailed information on how is a mirage created when you place an object between two parabolic mirrors, with one of them opened.

You must know about this device:
http://www.optigone.com/mirage_images/hologramWhand.gif

In other words, I would like to know where can I find detailed information on how does it work.

Thanks a lot :p.
 
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well, I just Googled 'parabolic mirror illusion' and came up with several websites that describe the geometry.
 
Thanks Dave. Think I've got some few good sites.
 
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