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  2. Spinning dancer - Wikipedia

    en.wikipedia.org/wiki/Spinning_Dancer

    The spinning dancer is a kinetic, bistable optical illusion resembling a rotating female dancer. The Spinning Dancer, also known as the Silhouette Illusion, is a kinetic, bistable, animated optical illusion originally distributed as a GIF animation showing a silhouette of a pirouetting female dancer.

  3. Tusi couple - Wikipedia

    en.wikipedia.org/wiki/Tusi_couple

    The Tusi couple (also known as Tusi's mechanism [1] [2] [3]) is a mathematical device in which a small circle rotates inside a larger circle twice the diameter of the smaller circle. Rotations of the circles cause a point on the circumference of the smaller circle to oscillate back and forth in linear motion along a diameter of the larger circle.

  4. GIF - Wikipedia

    en.wikipedia.org/wiki/GIF

    The Graphics Interchange Format (GIF; / ɡ ɪ f / GHIF or / dʒ ɪ f / JIF, see § Pronunciation) is a bitmap image format that was developed by a team at the online services provider CompuServe led by American computer scientist Steve Wilhite and released on June 15, 1987.

  5. Zoetrope - Wikipedia

    en.wikipedia.org/wiki/Zoetrope

    The models are mounted on a rotating base and the light flashes on and off within an extremely small fraction of a second as each successive model passes the same spot. The stroboscopic effect makes each seem to be a single animated object. By allowing the rotation speed to be slightly out of synchronization with the strobe, the animated ...

  6. Torus - Wikipedia

    en.wikipedia.org/wiki/Torus

    Poloidal direction (red arrow) and toroidal direction (blue arrow) A torus of revolution in 3-space can be parametrized as: [2] (,) = (+ ⁡) ⁡ (,) = (+ ⁡) ⁡ (,) = ⁡ using angular coordinates θ, φ ∈ [0, 2π), representing rotation around the tube and rotation around the torus's axis of revolution, respectively, where the major radius R is the distance from the center of the tube to ...

  7. Phenakistiscope - Wikipedia

    en.wikipedia.org/wiki/Phenakistiscope

    When there is the same number of images as slots, the images will animate in a fixed position, but will not drift across the disc. Fewer images than slots and the images will drift in the opposite direction to that of the spinning disc. More images than slots and the images will drift in the same direction as the spinning disc. [16]

  8. File:Wikipedia logo puzzle globe spins horizontally ...

    en.wikipedia.org/wiki/File:Wikipedia_logo_puzzle...

    Date: 31 March 2021: Source: Reversed version of File:Wikipedia logo puzzle globe spins horizontally continuously.gif: Author: David Richfield (User:Slashme) Github profile (blender file), User:Psiĥedelisto (this rendered version), User:Jahobr (only the horizontal rotation), User:Chlod (continuous rotation)

  9. Lilac chaser - Wikipedia

    en.wikipedia.org/wiki/Lilac_chaser

    A gap running around the circle of lilac discs; A green disc running around the circle of lilac discs in place of the gap; and; The green disc running around on the grey background, with the lilac discs having disappeared in sequence. The illusion was created by Jeremy Hinton some time before 2005. It then spread widely over the internet. [2]