beam-power tube

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New Zealand. Political/Physical map. Includes locator.

Where Is “Old Zealand”?

Close up of books. Stack of books, pile of books, literature, reading. Homepage 2010, arts and entertainment, history and society

12 Novels Considered the “Greatest Book Ever Written”

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

Illustration for Demystified "How Dangerous is Quicksand"

How Deadly Is Quicksand?

Titanic infographic. The 30th anniversary of its discovery is September 1, 2015. SPOTLIGHT VERSION.

Timeline of the Titanic’s Final Hours

King Cobra snake in Malaysia. (reptile)

9 of the World’s Deadliest Snakes

Entrants falling and tumbling over while chasing the cheese at the 2016 'Cheese Rolling' held at Cooper's Hill, in the Cotswolds, Brockworth England

7 of the World’s Most Dangerous Festivals

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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