Mechanical Engineering Material - Mane, Uvaraj Vilasrao
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Valence electrons are detached from atoms, and spread in an 'electron sea' that "glues" the ions together. Metals are usually strong, conduct electricity and heat well and are opaque to light (shiny if polished).Examples: aluminum, steel, brass, gold.The bonding is covalent (electrons are shared between atoms). Their electrical properties depend extremely strongly on minute proportions of contaminants. They are opaque to visible light, but transparent to the infrared. Examples: Si, Ge, GaAs...

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Produktbeschreibung
Valence electrons are detached from atoms, and spread in an 'electron sea' that "glues" the ions together. Metals are usually strong, conduct electricity and heat well and are opaque to light (shiny if polished).Examples: aluminum, steel, brass, gold.The bonding is covalent (electrons are shared between atoms). Their electrical properties depend extremely strongly on minute proportions of contaminants. They are opaque to visible light, but transparent to the infrared. Examples: Si, Ge, GaAs...
Autorenporträt
Mr. Uvaraj Vilasrao Mane, working as Lecturer at Bharati Vidyapeeth Institute of Technology, Navi Mumbai, having 13 years of experience. He also works as a Design Engineer at ELGIN Process Equipment Pvt. Ltd., Navi Mumbai for 1 year. He completed a Master of Engineering in Machine Design, from Pillai College of Engineering and technology, Rasayani.