beam-power tube

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pulmonary veins and arteries, circulation, cardiovascular system, human anatomy, (Netter replacement project - SSC)

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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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Rainbow flag. Sign of diversity, inclusiveness, hope, yearning. Gay pride flag popularized by San Francisco artist Gilbert Baker in 1978. Inspired by Judy Garland singing Over the Rainbow. gay rights, homosexual, gays, LGBT community

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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

beam-power tube

electronics

Learn about this topic in these articles:

type of tetrode

In tetrode
…specially designed tetrode, called the beam-power tube, has found extensive use in power amplification.
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