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  2. Wikipedia : Public domain image resources

    en.wikipedia.org/wiki/Wikipedia:Public_domain...

    Free-Images.com – More than 12 Million Public Domain/CC0 stock images, clip-art, historical photos and more. Excellent Search Results. Commercial use OK. No attribution required. No login required. Good Free Photos – All public domain pictures of mainly landscape but wildlife and plants as well

  3. Clip art - Wikipedia

    en.wikipedia.org/wiki/Clip_art

    Examples of computer clip art, from Openclipart. Clip art (also clipart, clip-art) is a type of graphic art. Pieces are pre-made images used to illustrate any medium. Today, clip art is used extensively and comes in many forms, both electronic and printed. However, most clip art today is created, distributed, and used in a digital form.

  4. Stress-whitening - Wikipedia

    en.wikipedia.org/wiki/Stress-whitening

    Stress-whitening is where a white line appears along a bend or curve when a material is stressed by bending or punching operations. An example of stress whitening on this package wrapper clip. The appearance of white line indicates that there is an onset of failure of the corresponding material. This phenomenon is known as "stress-whitening".

  5. Optical brightener - Wikipedia

    en.wikipedia.org/wiki/Optical_brightener

    A white surface treated with an optical brightener can emit more visible light than that which shines on it, making it appear brighter. The blue light emitted by the brightener compensates for the diminishing blue of the treated material and changes the hue away from yellow or brown and toward white.

  6. Black–white binary - Wikipedia

    en.wikipedia.org/wiki/Blackwhite_binary

    In critical race theory, the blackwhite binary is a paradigm through which racial history is presented as a linear story between White and Black Americans. [1] This binary has largely defined how civil rights legislation is approached in the United States, as African Americans led most of the major racial justice movements that informed civil rights era reformation. [2]

  7. Black-and-white - Wikipedia

    en.wikipedia.org/wiki/Black-and-white

    Since the late 1960s, few mainstream films have been shot in black-and-white. The reasons are frequently commercial, as it is difficult to sell a film for television broadcasting if the film is not in color. 1961 was the last year in which the majority of Hollywood films were released in black and white.

  8. Whitewashing (beauty) - Wikipedia

    en.wikipedia.org/wiki/Whitewashing_(beauty)

    Whitewashing in films is commonly identified when a non white role is cast by a white person. An example that dates back to 2007 but still endures heavy criticism in 2022 is the biopic film A Mighty Heart which was directed by Michael Winterbottom. [10] In this film, Angelina Jolie who is white played Mariane Pearl who is of French black ...

  9. Magnum opus (alchemy) - Wikipedia

    en.wikipedia.org/wiki/Magnum_opus_(alchemy)

    The development of black, white, yellow, and red can also be found in the Physika kai Mystika of Pseudo-Democritus, which is often considered to be one of the oldest books on alchemy. [4] After the 15th century, many writers tended to compress citrinitas into rubedo and consider only three stages. [ 5 ]