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- Greenleaf_Whittier_Pickard abstract "Greenleaf Whittier Pickard (February 14, 1877, Portland, Maine- January 8, 1956, Newton, Massachusetts) was a United States radio pioneer. Pickard was a researcher in the early days of wireless. He was responsible for the development of the crystal detector, (cat's whisker detector), a radio wave detector which was the central component in early radio receivers called crystal radios, which were the most widely used radio receivers until about 1920 and continued to be used until World War 2. He also experimented with antennas, radio wave propagation, and noise suppression.On August 30, 1906 he filed a patent for a silicon crystal detector, which was granted on November 20, 1906. Pickard's detector was revolutionary in that he found that a fine pointed wire known as a "cat's whisker," in delicate contact with a mineral produced the best semiconductor effect. On June 10, 1907, he filed a patent for a Magnetic Aerial (a loop aerial) which was granted on January 21, 1908. Pickard's loop antenna had directional properties that could be used to reduce interference to the intended wireless communications. Greenleaf Whittier Pickard was named after his great-uncle, the American Quaker John Greenleaf Whittier (1807-1892). Pickard was president of the Institute of Radio Engineers in 1913.".
- Greenleaf_Whittier_Pickard award IEEE_Medal_of_Honor.
- Greenleaf_Whittier_Pickard birthDate "1877-02-14".
- Greenleaf_Whittier_Pickard birthYear "1877".
- Greenleaf_Whittier_Pickard deathDate "1956-01-08".
- Greenleaf_Whittier_Pickard deathYear "1956".
- Greenleaf_Whittier_Pickard field Electrical_engineering.
- Greenleaf_Whittier_Pickard nationality United_States.
- Greenleaf_Whittier_Pickard residence United_States.
- Greenleaf_Whittier_Pickard thumbnail Greenleaf_Whittier_Pickard_in_his_Boston_laboratory.PNG?width=300.
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- Greenleaf_Whittier_Pickard awards IEEE_Medal_of_Honor.
- Greenleaf_Whittier_Pickard birthDate "1877-02-14".
- Greenleaf_Whittier_Pickard dateOfBirth "1877-02-14".
- Greenleaf_Whittier_Pickard dateOfDeath "1956-01-08".
- Greenleaf_Whittier_Pickard deathDate "1956-01-08".
- Greenleaf_Whittier_Pickard field Electrical_engineering.
- Greenleaf_Whittier_Pickard hasPhotoCollection Greenleaf_Whittier_Pickard.
- Greenleaf_Whittier_Pickard name "Greenleaf Whittier Pickard".
- Greenleaf_Whittier_Pickard name "Pickard, Greenleaf Whittier".
- Greenleaf_Whittier_Pickard nationality United_States.
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- Greenleaf_Whittier_Pickard subject Category:1877_births.
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- Greenleaf_Whittier_Pickard comment "Greenleaf Whittier Pickard (February 14, 1877, Portland, Maine- January 8, 1956, Newton, Massachusetts) was a United States radio pioneer. Pickard was a researcher in the early days of wireless. He was responsible for the development of the crystal detector, (cat's whisker detector), a radio wave detector which was the central component in early radio receivers called crystal radios, which were the most widely used radio receivers until about 1920 and continued to be used until World War 2.".
- Greenleaf_Whittier_Pickard label "Greenleaf Pickard".
- Greenleaf_Whittier_Pickard label "Greenleaf Whittier Pickard".
- Greenleaf_Whittier_Pickard label "Greenleaf Whittier Pickard".
- Greenleaf_Whittier_Pickard label "Greenleaf Whittier Pickard".
- Greenleaf_Whittier_Pickard label "Greenleaf Whittier Pickard".
- Greenleaf_Whittier_Pickard label "Greenleaf Whittier Pickard".
- Greenleaf_Whittier_Pickard label "Пиккард, Гринлиф Уиттер".
- Greenleaf_Whittier_Pickard label "グリーンリーフ・ホイッティア・ピカード".
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- Greenleaf_Whittier_Pickard depiction Greenleaf_Whittier_Pickard_in_his_Boston_laboratory.PNG.
- Greenleaf_Whittier_Pickard givenName "Greenleaf Whittier".
- Greenleaf_Whittier_Pickard isPrimaryTopicOf Greenleaf_Whittier_Pickard.
- Greenleaf_Whittier_Pickard name "Greenleaf Whittier Pickard".
- Greenleaf_Whittier_Pickard name "Pickard, Greenleaf Whittier".
- Greenleaf_Whittier_Pickard surname "Pickard".
