Top countries by germanium production (1970-2018) скачать в хорошем качестве

Top countries by germanium production (1970-2018)

This video presents the world ranking of germanium producing countries from 1970 to 2018. The unit of measure of the presented data is tonnes (metric). Germanium is a lustrous, hard-brittle, grayish-white metalloid in the carbon group, chemically similar to its group neighbors silicon and tin. Pure germanium is a semiconductor with an appearance similar to elemental silicon. Like silicon, germanium naturally reacts and forms complexes with oxygen in nature. Elemental germanium is used as a semiconductor in transistors and various other electronic devices. Historically, the first decade of semiconductor electronics was based entirely on germanium. Presently, the major end uses are fibre-optic systems, infrared optics, solar cell applications, and light-emitting diodes (LEDs). Germanium compounds are also used for polymerization catalysts and have most recently found use in the production of nanowires. This element forms a large number of organogermanium compounds, such as tetraethylgermanium, useful in organometallic chemistry. Germanium is considered a technology-critical element. If you enjoy the video, please leave a comment below, click the like button, and make sure to subscribe for more upcoming videos! Playlist: World mineral production    • World mineral production   Source for data: The British Geological Survey (BGS) https://www.bgs.ac.uk/ Music: Roadtrip by Scandinavianz   / scandinavianz   Creative Commons — Attribution 3.0 Unported — CC BY 3.0 Free Download / Stream: http://bit.ly/l-roadtrip Music promoted by Audio Library    • Roadtrip – Scandinavianz (No Copyright Music)