klystron

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two-cavity klystron

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King Cobra snake in Malaysia. (reptile)

9 of the World’s Deadliest Snakes

A Factory Interior, watercolor, pen and gray ink, graphite, and white goache on wove paper by unknown artist, c. 1871-91; in the Yale Center for British Art. Industrial Revolution England

Inventors and Inventions of the Industrial Revolution

Queen Elizabeth II addresses at opening of Parliament. (Date unknown on photo, but may be 1958, the first time the opening of Parliament was filmed.)

All 119 References in “We Didn’t Start the Fire,” Explained

World Data Locator Map: Australia

Is Australia an Island?

Dr. Martin Luther King Jr. addresses marchers during his "I Have a Dream" speech at the Lincoln Memorial in Washington. August 28th 1963

Was Martin Luther King, Jr., a Republican or a Democrat?

Union Jack flag of Great Britain, united kingdom

What’s the Difference Between Great Britain and the United Kingdom?

Demystified - Do Lemmings Really Commit Mass Suicide? illustration

Do Lemmings Really Commit Mass Suicide?

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two-cavity klystron

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microwave interaction space two-cavity klystron drift space catcher cavity buncher cavity electron tube radar maser diode microwave oven tetrode thyratron X-ray tube triode ignitron electron gun

Dig Deeper: More Articles That Discuss This Topic

electron tube: Common tubes and their applications

Key People

Pierce, John Robinson

John Robinson Pierce

American scientist

William Webster Hansen

American physicist

Russell H. Varian

American physicist

Sigurd F. Varian

American engineer