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quark
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protons, neutrons, pions, and other hadrons hadrons from quark and antiquark combinations
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quark summary
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bird. mourning dove. pigeon and dove. Mourning Dove (Zenaida macroura) family Columbidae.
Nikola Tesla's Weird Obsession with Pigeons
Small, white rat (genus Rattus) on a glass table. (rodent, laboratory, experiment)
Cruel and Unusual Punishments: 15 Types of Torture
Chapter 4 pg 42 - Chapter header of The Adventures of Tom Sawyer by Mark Twain. Published in 1884 by The American Publishing Company
Periods of American Literature
In this aerial photo, structures are damaged and destroyed October 15, 2005 in Balakot, Pakistan. It is estimated that 90% of the city of Balakot was leveled by the earthquake. The death toll in the 7.6 magnitude earthquake that struck northern Pakistan on October 8, 2005 is believed to be 38,000 with at least 1,300 more dead in Indian Kashmir. SEE CONTENT NOTES.
6 of the World’s Deadliest Natural Disasters
Young boys working in a thread spinning mill in Macon, Georgia, 1909. Boys are so small they have to climb onto the spinning frame to reach and fix broken threads and put back empty bobbins. Child labor. Industrial revolution
The Rise of the Machines: Pros and Cons of the Industrial Revolution
earthquake. Heavily damaged school in the town of Yingxiu after a major earthquake struck China's Sichuan Province on May 12, 2008.
The 6 Deadliest Earthquakes Since 1950
Vietnam War. U.S. President Lyndon B. Johnson awards the Distinguished Service Cross to First Lieutenant Marty A. Hammer, during a visit to military personnel, Cam Ranh Bay, South Vietnam, October 26, 1966. President Johnson
Vietnam War Timeline

quark: Related Content

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Photos

protons, neutrons, pions, and other hadrons
hadrons from quark and antiquark combinations
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Key People

Murray Gell-Mann
Murray Gell-Mann
American physicist
Henry Way Kendall
American physicist
David Gross
American physicist
Frank Wilczek
Frank Wilczek
American physicist
H. David Politzer
American physicist
Hooft, Gerardus 't
Gerardus ’t Hooft
Dutch physicist
Jerome Isaac Friedman
American physicist
Richard E. Taylor
Canadian physicist

Related Quizzes and Features

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Encyclopaedia Britannica thistle graphic to be used with a Mendel/Consumer quiz in place of a photograph.
How Much Do You Know About Physics?