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  2. List of optical illusions - Wikipedia

    en.wikipedia.org/wiki/List_of_optical_illusions

    Movement that appears to occur when fixed pictures turn on and off. Bezold Effect: An apparent change of tone of a colour due to the alteration of the colour of the background. Blivet: Also known as "poiuyt" or "devil's fork", this illusion is an impossible image because in reality the shape cannot exist. Café wall illusion

  3. Chroma key - Wikipedia

    en.wikipedia.org/wiki/Chroma_key

    Chroma key is achieved by comparing the phase of the video to the phase corresponding to the pre-selected colour. In-phase portions of the video are replaced by the alternate background video. [citation needed] In digital colour TV, colour is represented by three numbers (red, green, blue intensity levels). Chroma key is achieved by a simple ...

  4. Grayscale - Wikipedia

    en.wikipedia.org/wiki/Grayscale

    Grayscale images are distinct from one-bit bi-tonal black-and-white images, which, in the context of computer imaging, are images with only two colors: black and white (also called bilevel or binary images). Grayscale images have many shades of gray in between.

  5. Monochrome - Wikipedia

    en.wikipedia.org/wiki/Monochrome

    Monochrome photography, also known as black-and-white photography; Monochrome painting, a style of painting that uses a single color (excluding shades thereof) Monochrome printmaking, printing styles that generate black-and-white images; Polychrome, of multiple colors, the opposite of monochrome

  6. Personalize your background image, sounds, and toolbar ...

    help.aol.com/articles/personalize-your...

    Personalize your background image, sounds, and toolbar appearance in AOL Desktop Gold Access your settings to see several options that let you make it your own, such as updating the sounds that you hear, adjusting the colors used, and choosing from any of your own images or the vast Flickr library to personalize your background.

  7. Cosmic microwave background - Wikipedia

    en.wikipedia.org/wiki/Cosmic_microwave_background

    1990 – FIRAS on the Cosmic Background Explorer (COBE) satellite measures the black body form of the CMB spectrum with exquisite precision, and shows that the microwave background has a nearly perfect black-body spectrum with T = 2.73 K and thereby strongly constrains the density of the intergalactic medium.

  8. Black light theatre - Wikipedia

    en.wikipedia.org/wiki/Black_light_theatre

    Black light theatre (in Czech černé divadlo) or simply black theatre, is a theatrical performance style characterized by the use of black box theatre augmented by black light illusion. This form of theatre originated from Asia and can be found in many places around the world. It has become a speciality of Prague, where many theatres use it.

  9. AOL Mail

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    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

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