[DOC] [TLE] Crystal radio - Wikipedia [PAR] For crystal-controlled oscillators (as used in radios), see Crystal oscillator. "
Crystal set" redirects here. For the Australian rock band, see The Crystal Set. Boy 
listening to a modern crystal radio. A crystal radio receiver, also called a crystal 
set or cat's whisker receiver, is a very simple radio ... After about 1920, crystal 
sets were superseded by the first amplifying... [DOC] [TLE] Free Flashcards about GEOLOGY/EARTH SCI. - StudyStack [PAR] AROUND 1920, PLATES OF THIS SILICON MINERAL WERE FIRST USED TO 
CONTROL RADIO FREQUENCIES, QUARTZ. WITH THE DAWN OF THIS "AGE"
... [DOC] [TLE] mono crystalline quartz - the piezoelectric effect - tfc.co.uk [PAR] naturally as the most abundant mineral on earth, constituting ... simple clocks into 
the silicon substrates used for IC ... be used for frequency control and must be of 
the ... the first patents for crystal controlled oscillators ... around 1926 that crystal 
oscillators were used to ... resonant plate cut from mono crystalline quartz with. [DOC] [TLE] Download Sample pages 2 PDF - Springer [PAR] the minerals with which the Brothers Curie first established the piezoelectric 
effect in 1880. In the early 1920s, the quartz resonator was first used for fre- ... 
shear cuts) were introduced in the 1930s, and assured the technology's suc- cess
. ... both a zero temperature coefficient of frequency, and is simultaneously stress-
. [DOC] [TLE] mono crystalline quartz - the piezoelectric effect - Laptech Precision ... [PAR] occurring naturally as the most abundant mineral on earth ... simple clocks into 
the silicon substrates used for IC fabrication. ... be used for frequency control and 
must be of the ... During the early 1920's crystal oscillator ... around 1926 that 
crystal oscillators were used to ... resonant plate cut from mono crystalline quartz 
with. [DOC] [TLE] Road to the Transistor - Jed Margolin [PAR] The first transistor was a germanium point-contact transistor consisting of two thin 
electrodes ... So, the silicon point-contact diode was invented in 1906. ... Until the 
1920s radio was in Morse Code and most radios were operated either by ... The 
first practical radars operated at the relatively low frequencies around 300 MHz. [DOC] [TLE] DoddStation - Western Historic Radio Museum [PAR] photo left: This 1913 photo shows M.H.Dodd at the controls of his 1912 .... Many 
of the 1909 Station parts were used in the construction of Dodd's 1912 station. ... 
photo left: Dodd's 1909 Receiver Inductance, Silicon Detector and Kellogg ..... E.I.
Co. manufacture and uses a mineral pellet mounted between two contact plates... [DOC] [TLE] The Lost Journals of Nikola Tesla - 07 [PAR] Tesla claimed the invention was an electrical generator that would not consume 
any fuel. .... The bigger the area of the insulated plate, the more energy you get. 
.... theories on high frequency electronics and radio antennas to generate power 
directly, .... Around 1920, Moray produced his first elementary device that 
delivered... [DOC] [TLE] Wild 2 and interstellar sample collection and Earth return - Tsou ... [PAR] Eos.org  Eos Archives (1920-2014) .... First published: 24 October 2003 Full 
publication history ... There are 132 silica aerogel capture cells of 3 cm and 1 cm 
thickness for the ... The aerogel capture cells were wedged into the sample 
collection trays and ... of radio frequency signals of the spacecraft X-band 
transponder and... [DOC] [TLE] Intense PP reflection beneath the aseismic forearc slope of the ... [PAR] Electromagnetics  Radio Science .... First published: 6 January 2005 Full 
publication history ... Amplitude of the plate boundary PP reflection phase was 
found maximum about ... along the plate interface are controlled by variations in 
the nature of the .... P wave velocities were determined to be around 6 km/s at the 
bottom of... [DOC] [TLE] UK English US English Espaol Franais Italiano Deutsch  ... [PAR] Crystal radios were the first widely used type of radio receiver, and the main type 
used ... voice signals by radio caused a technological explosion in the years 
around 1920 that ... Several other minerals also performed well as detectors. .... 
The tuned circuit has a resonant frequency and allows

Question: Around 1920 plates of this silicon mineral were first used to control radio frequencies
Answer: quartz