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คห 30
ประโยชน์ของเจอมันเนี่ยม จากวิกิพีเดียครับ
Germanium "metal" (isolated germanium) is used as semiconductor in transistors and various other electronic devices. Historically the first decade of semiconductor electronics were entirely based on germanium, although its production for such use today is a small fraction (2%) of that of ultra-high purity silicon, which has largely replaced it. Germanium's major end uses in the present are fiber-optic systems and infrared optics. It is used in solar cell applications. Germanium compounds are used for polymerization catalysts. Germanium is finding a new use in nanowires. Germanium forms a large number of organometallic compounds, such as tetraethylgermane, which are useful in chemistry.
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JD300 
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1 ส.ค. 55 09:49:59
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[วิทยา ตาสว่าง] ตอน 5 - เหรียญลวงโลก ริสต์แบนด์ลวงใจ
