what's inside: science - encyclopedia entries

Learn about Science and the various topics related to Science with our encyclopedia entries.

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Hydrophone

Hydrophone is an instrument used to listen to sounds transmitted through water.

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Banneker, Benjamin

Banneker, Benjamin (1731-1806), was probably the best-known African American in early United States history.

Bathyscaph

Bathyscaph, BATH uh skaf, is a diving craft used for deep-sea observation.