impossible figure

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Impossible figures

The endless stair

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Lusitania sinking, illustration from The War of the Nations (New York), December 31, 1919. World War I, WWI. This image is one of three on the page. (See source file for the other two.)

7 of the World’s Deadliest Shipwrecks

African Americans demonstrating for voting rights in front of the White House as police and others watch, March 12, 1965. One sign reads, "We demand the right to vote everywhere." Voting Rights Act, civil rights.

Timeline of the American Civil Rights Movement

July, 2006, Launch of Space Shuttle Discovery STS-121. See attached for full caption information.

Will Light-Speed Space Travel Ever Be Possible?

Marriage. A couple getting married during a church wedding ceremony. (religion, ceremony, bride, groom)

The Seven Sacraments of the Roman Catholic church

Two chicks near an egg with a white background (poultry, chick, chickens, birds).

What Do Eggs Have to Do with Easter?

Entrants falling and tumbling over while chasing the cheese at the 2016 'Cheese Rolling' held at Cooper's Hill, in the Cotswolds, Brockworth England

7 of the World’s Most Dangerous Festivals

New Zealand. Political/Physical map. Includes locator.

Where Is “Old Zealand”?

impossible figure

anomalous representation

Also known as: undecidable figure

Learn about this topic in these articles:

major reference

In number game: Impossible figures
At first glance, drawings such as those in Figure 5 appear to represent plausible three-dimensional objects, but closer inspection reveals that they cannot; the representation is flawed by faulty perspective, false juxtaposition, or psychological distortion. Among the first to produce these drawings—also called…
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