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2. Illusion transmitter - Wikipedia

   en.wikipedia.org/wiki/Illusion_transmitter

   An illusion transmitter uses two parabolic mirrors to transmit 3-D illusions of an object by use of a camera trained on the first mirror, which then sends video signals to a projector aimed at the second mirror.

3. Parabolic reflector - Wikipedia

   en.wikipedia.org/wiki/Parabolic_reflector

   Parabolic reflectors are popular for use in creating optical illusions. These consist of two opposing parabolic mirrors, with an opening in the center of the top mirror. When an object is placed on the bottom mirror, the mirrors create a real image, which is a virtually identical copy of the original that appears in the opening. The quality of ...

4. Coma (optics) - Wikipedia

   en.wikipedia.org/wiki/Coma_(optics)

   Coma is an inherent property of telescopes using parabolic mirrors. Unlike a spherical mirror, a bundle of parallel rays parallel to the optical axis will be perfectly focused to a point (the mirror is free of spherical aberration), no matter where they strike the mirror. However, this is only true if the rays are parallel to the axis of the ...

5. Invisibility - Wikipedia

   en.wikipedia.org/wiki/Invisibility

   By using two parabolic cylindric mirrors and one plane mirror, the image of the background is directed around an object, making the object itself invisible - at least from two sides. Invisibility is the state of an object that cannot be seen. An object in this state is said to be invisible (literally, "not visible").

6. Euler's Disk - Wikipedia

   en.wikipedia.org/wiki/Euler's_Disk

   A mirror can further enhance the effect by hiding the support surface and showing separation between moving disk surface and mirror image. Disk imperfections, seen in shadow, that could hamper the illusion, can be hidden in a skin pattern that blurs under motion.

7. Three-mirror anastigmat - Wikipedia

   en.wikipedia.org/wiki/Three-mirror_anastigmat

   A three-mirror anastigmat is an anastigmat telescope built with three curved mirrors, enabling it to minimize all three main optical aberrations – spherical aberration, coma, and astigmatism. This is primarily used to enable wide fields of view, much larger than possible with telescopes with just one or two curved surfaces.

8. Jack Nicholson Makes Rare TV Appearance at ‘SNL50 ...

   www.aol.com/entertainment/jack-nicholson-makes...

   Jack Nicholson Makes Rare TV Appearance at ‘SNL50,’ Introduces Adam Sandler’s Heartfelt Song Honoring the Show’s History

9. Foucault knife-edge test - Wikipedia

   en.wikipedia.org/wiki/Foucault_knife-edge_test

   From top: Parabolic mirror showing Foucault shadow patterns made by knife edge inside radius of curvature R (red X), at R and outside R. Foucault testing is commonly used by amateur telescope makers for figuring primary mirrors in reflecting telescopes. [5] [6] The mirror to be tested is placed vertically in a stand. The Foucault tester is set ...