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Silicon
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last updated May 7th, 2003 and is permanently morphing...
(11 K'an (Corn) / 12 Uo - 24/260 - 12.19.10.4.4)

silicon (sîl´î-ken,
-kòn´) noun Symbol Si
A nonmetallic element occurring
extensively in the earth's crust in silica and silicates, having both an
amorphous and a crystalline allotrope, and used doped or in combination
with other materials in glass, semiconducting devices, concrete, brick,
refractories, pottery, and silicones. Atomic number 14; atomic weight 28.086;
melting point 1,410°C; boiling point 2,355°C; specific gravity
2.33; valence 4.
[From silica.]
silicon
silicon (sil'i-kon`) noun
A semiconductor used in
many devices, especially microchips. Silicon, with atomic number 14 and
atomic weight 28, is the second most common element in nature.
Silicon
Silicon, symbol Si, semimetallic element that is the second most common element on earth, after oxygen. The atomic number of silicon is 14, and the atomic weight is 28.086.
Properties and Occurrence
Silicon forms about 28 percent
of the earth's crust, but it does not occur alone. It is found as silicon
dioxide and in complex silicates. Nearly 40 percent of all common minerals
contain silicon. The mineral
quartz
and varieties of quartz (such as onyx and flint) are naturally occurring
crystal forms of silica (silicon dioxide). Sand is mostly silicon dioxide.
Silicate minerals- pyroxenes, micas, and zeolites- form most of clays,
soils, and rocks. Semiprecious stones, such as garnet, zircon, topaz, and
tourmaline, also contain large amounts of silicates.
Uses
Silicon is a semiconductor.
Its abundance in nature and the ability to control its
electrical
properties have made possible the development and widespread application
of transistors and integrated circuits by the electronics industry. Silicon
is also used in the steel industry. Silicon steel, which contains from
2.5 to 4 percent silicon, is used in making the cores of electrical transformers.
Silicon is also added to brass and bronze alloys. Silica and silicates
are used in the manufacture of glass, glazes, enamels, cement, and porcelain.
Sodium silicate, an important synthetic silicate, is a colorless,
water-soluble
solid. The water solution of sodium silicate, called water glass, is used
for preserving eggs, for glue in making boxes, and for fireproofing.
Silicon Valley
Silicon Valley (sîl´î-ken
vàl´ê, -kòn´)
A region of western California
southeast of San Francisco known for its high-technology design and manufacturing
industries.
silicon-on-sapphire
silicon-on-sapphire (sil`i-kon-on-saf'ìr)
noun
Acronym SOS.
A method of fabricating
semiconductors in which the semiconductor devices are formed in a thin
single layer of silicon that has been grown on an insulating substrate
of synthetic sapphire.
Science, 1824
Jöns Jakob Berzelius
isolates silicon.
- George Gilder - _Telecosm_
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"Well Terence, now I'm wondering
what you think the ultimate goal of human
evolution
is..?"
Terence McKenna: "Oh, a good
party..."
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