Q- Which American scientist served as the 'First Secretary of the Smithsonian Institution'?
Answer:
'Joseph Henry' (17 December 1797 – 13 May 1878), an American scientist served as the 'First Secretary of the Smithsonian Institution. He was also a founding member of the National Institute for the Promotion of Science, a precursor of the Smithsonian Institution.
He made significant contribution towards electromagnet. He was also the inventor of the Electric Doorbell in 1831 and Electric Relay in 1835.
Invention : Electromagnet
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