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Crystal radio

Crystal radio

The '''Crystal radio''', or Crystal set, is an early type of radio receiver.  It was devised by U.S. radio pioneer Greenleaf Whittier Pickard about 1900 and patented by him in 1906.<ref>[https://worldwide.espacenet.com/publicationDetails/originalDocument?CC=US&NR=836531A&KC=A&FT=D&ND=3&date=19061120&DB=EPODOC&locale=en_EP U.S. patent 836531]</ref>  G.W. Pickard's great-uncle was the anti-slavery campaigner John Greenleaf Whittier.

The '''Crystal radio''', or Crystal set, is an early type of radio receiver.  It was devised by U.S. radio pioneer Greenleaf Whittier Pickard about 1900 and patented by him in 1906.<ref>[https://worldwide.espacenet.com/publicationDetails/originalDocument?CC=US&NR=836531A&KC=A&FT=D&ND=3&date=19061120&DB=EPODOC&locale=en_EP U.S. patent 836531]</ref>  G.W. Pickard's great-uncle was the anti-slavery campaigner John Greenleaf Whittier who was an honoree of the [[Hall of Fame for Great Americans]].

==References==

==References==

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