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A combination between a whiteboard and a cork bulletin board Original early 1960s ad for "Plasti-slate", the first whiteboard/dry erase board invented by Martin Heit. It has been widely reported that Korean War veteran and photographer Martin Heit and Albert Stallion, an employee at Alliance, a leading flat rolled steel sheet supplier should be credited with the invention of the whiteboard in ...
William Brownie Garden (December 2, 1869 – 1960) was a Scottish inventor and entrepreneur. He is probably best known for his invention of the "revolving blackboard". Up until his death at age 90, in 1960, the ‘Inventor’ still worked at his own bench in the factory, from which came innovations like an improved saw which cut ten times quicker than any other, and an eight-wheeled car for ...
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]
The grandchild of slaves, print artist and sculptor Elizabeth Catlett was also an activist. Although some of her art includes confrontational symbols from the Black Power movement, she is best known for her portrayals of African-American heroes: MLK, Malcolm X, Harriet Tubman — and strong maternal women.
“In the 1960s, the Black power movement used it as a gesture to represent the struggle for civil rights.” Although the clenched fist would later be used by other oppressed groups, including ...
Scratchboard or scraperboard or scratch art [1] is a form of direct engraving where the artist scratches off dark ink to reveal a white or colored layer beneath. The technique uses sharp knives and tools for engraving into the scratchboard, which is usually cardboard covered in a thin layer of white China clay coated with black India ink .
Overhead projector in operation, with a transparency being flashed. A transparency, also known variously as a viewfoil or foil (from the French word "feuille" or sheet), or viewgraph, is a thin sheet of transparent flexible material, typically polyester (historically cellulose acetate), onto which figures can be drawn.
Whiteboarding when used in the context of computing, is the placement of shared files on an on-screen shared notebook or whiteboard. Videoconferencing and data conferencing software often lets documents as on a physical whiteboard.