Cosa significa?
Cosa significa?
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Each planet was thought to have a particular influence on one metal or its ores. Chaucer described this connection Per mezzo di the 14th Century. The Sun is associated with gold, the Moon with silver, Mars with iron, Saturn with lead, Jupiter with tin and Venus with copper and even today, we still keep the same name for both the planet and the element, Mercury. The association between gold and the Sun seems fairly obvious from their colours, similarly the connection between silver and the Moon. The other connections are little more vague. A 17th Century text quotes, "
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Though often not considered as a thermoelectric material alone, polycrystalline tellurium does show great thermoelectric performance with the thermoelectric figure of merit, zT, as high as 1.0, which is even higher than some of other conventional TE materials like SiGe and BiSb.[78]
This work by nexTC Corporation will use liquid-phase precursors to fabricate state-of-the-art buffer films that improve device esibizione. These films exhibit ultra-smooth surfaces. They reduce surface texture/roughness and increase transmission by limiting optical haze, providing manufacturers with pristine surfaces for device manufacturing. Durante this project, the team will demonstrate the efficacy of solution processing to yield high-quality front-interface buffer/emitter layer films used Per mezzo di the CdTe market.
Although there are adequate supplies of the element, voto negativo single use has been developed that creates a large demand for it. Small amounts of tellurium increase the ductility of aluminum alloys, the hardness and tensile strength of tin alloys, and the machinability of stainless steel and copper; Durante lead and in manganese-magnesium alloys, it increases resistance to corrosion.
Group A vertical column Per mezzo di the periodic table. Members of a group typically have similar properties and electron configurations Per their outer shell.
CAS number The Chemical Abstracts Service registry number is a unique identifier of a particular chemical, designed to prevent confusion altre informazioni arising from different languages and naming systems.
Tellurium has been used to vulcanise rubber, to tint glass and ceramics, Per mezzo di solar cells, in rewritable CDs and DVDs and as a catalyst Per oil refining. It can be doped with silver, gold, copper or tin Durante semiconductor applications.
The demand for tellurium does not incontro that for selenium. The two elements are found together Sopra many ores; they may be isolated by employing the processes described Per connection with selenium, obtaining solutions containing salts of both selenious and tellurous acids, H2SeO3 and H2TeO3.
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