Greenleaf Whittier Pickard

Greenleaf Whittier Pickard was a United States United States

The United States of America, also known as the United States, the U.S., the U.S.A., a... 

 radio Radio

Radio is the wireless transmission of signals [i], by modulation [i] of electromagnetic waves [i] ... 

 pioneer. Pickard was a researcher in the early days of wireless. He experimented with crystal detectors, used in crystal radio receiver Crystal radio receiver

[i] consisting of a variable [[LC circuit|LC]... 

s. On August 30, 1906 he filed a patent for a silicon Silicon

Silicon is the chemical element [i] in the periodic table [i] that has the symbol Si and atomic number [i] ... 

 crystal Crystal

In chemistry [i] and mineralogy [i], a crystal is a solid [i] in which the constituent atom [i]s, molecule [i] ... 

 detector, which was granted on November 20, 1906 .

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Greenleaf Whittier Pickard was a United States United States

The United States of America, also known as the United States, the U.S., the U.S.A., a... 

 radio Radio

Radio is the wireless transmission of signals [i], by modulation [i] of electromagnetic waves [i] ... 

 pioneer.
Pickard was a researcher in the early days of wireless. He experimented with crystal detectors, used in crystal radio receiver Crystal radio receiver

[i] consisting of a variable [[LC circuit|LC]... 

s.
On August 30, 1906 he filed a patent for a silicon Silicon

Silicon is the chemical element [i] in the periodic table [i] that has the symbol Si and atomic number [i] ... 

 crystal Crystal

In chemistry [i] and mineralogy [i], a crystal is a solid [i] in which the constituent atom [i]s, molecule [i] ... 

 detector, which was granted on November 20, 1906 .

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