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Whiteboards became commercially available in the early 1960s, but did not become widely used until 30 years later. Early whiteboards needed to be wiped with a damp cloth and markers had a tendency to leave marks behind, even after the board was erased. [2] [3] In 1974, whiteboards were proposed as additional equipment for Soviet schools. [4]
A blackboard can simply be a board painted with a dark matte paint (usually black, occasionally dark green). [1] Matte black plastic sign material (known as closed-cell PVC foamboard) is also used to create custom chalkboard art. [2] Blackboards on an A-frame are used by restaurants and bars to advertise daily specials. [3]
This list of African-American inventors and scientists documents many of the African Americans who have invented a multitude of items or made discoveries in the course of their lives. These have ranged from practical everyday devices to applications and scientific discoveries in diverse fields, including physics, biology, math, and medicine.
African-American art is known as a broad term describing visual art created by African Americans. The range of art they have created, and are continuing to create, over more than two centuries is as varied as the artists themselves. [ 1 ]
Andre Gunder Frank's Sociology of Development and Underdevelopment of Sociology is published. Ernest Gellner's Saints of the Atlas is published. Edmund Leach's Genesis as Myth and Other Essays is published. David Matza's Causes of Delinquency is published. Ralph Miliband's The State in Capitalist Society is published.
The term whiteboard is also used metaphorically to refer to virtual whiteboards in which computer software applications simulate whiteboards by allowing writing or drawing. This is a common feature of groupware for virtual meetings, collaboration, and instant messaging.
AfriCOBRA was founded on the South Side of Chicago by a group of artists intent on defining a "black aesthetic." AfriCOBRA artists were associated with the Black Arts Movement in America, a movement that began in the mid-1960s and that celebrated culturally-specific expressions of the contemporary Black community in the realms of literature, theater, dance and the visual arts. [6]
The Black Arts Movement (BAM) was an African-American-led art movement that was active during the 1960s and 1970s. [3] Through activism and art, BAM created new cultural institutions and conveyed a message of black pride. [4]