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electrons and positrons in a bubble chamber proton-antiproton collision
Learn about antimatter and its properties, and understand the annihilation of matter and antimatter
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Italian-born physicist Dr. Enrico Fermi draws a diagram at a blackboard with mathematical equations. circa 1950.
Physics and Natural Law
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What Is Antimatter?
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Lake Mead (the impounded Colorado River) at the Hoover Dam. The light-coloured band of rock above the shoreline shows the decrease in water level in the first few years of the 21st century.
6 Lakes That Are Drying Up
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Is Cinco de Mayo Mexico's Independence Day?
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

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electrons and positrons in a bubble chamber
proton-antiproton collision
Learn about antimatter and its properties, and understand the annihilation of matter and antimatter
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Italian-born physicist Dr. Enrico Fermi draws a diagram at a blackboard with mathematical equations. circa 1950.
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Atom illustration. Electrons chemistry physics matter neutron proton nucleus
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