Hendrik Casimir

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San Francisco, California/USA-1/18/20: Womens March at Civic Center marching with signs of political protest regarding equality also embracing 2020 presidential candidates and celebrating equality

How Does the U.S. Government Define the Difference Between a Protest and a Riot?

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7 Puzzling Plane Disappearances

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

Normandy Invasion: Omaha Beach. World War II. D-Day. Infographic. SPOTLIGHT VERSION

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Nelson Mandela, undated photo.

15 Nelson Mandela Quotes

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Nostradamus and His Prophecies

Salem Witch Trials. Photogravure after the painting by Walter McEwen titled - The Witches - circa 1890s.

How Rye Bread May Have Caused the Salem Witch Trials

Hendrik Casimir

Dutch physicist

Learn about this topic in these articles:

Casimir effect

In Casimir effect
…in 1948 by Dutch physicist Hendrik Casimir.
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