O que são minerais chamados terras raras?

O que são minerais chamados terras raras? São denominadas Terras Raras o conjunto de 15 elementos químicos constituídos pela família dos lantanídeos mais o ítrio. Leves: lantânio, cério, praseodímio e neodímio; Médios: samário, európio e gadolínio; Pesados: térbio, disprósio, hólmio, érbio, túlio, itérbio, lutécio e ítrio. Quais são os metais Read more…

Was Kleinfelds ever in Brooklyn?

Was Kleinfelds ever in Brooklyn? 1941. Established by the Kleinfeld family, Hedda Kleinfeld and Jack Schacter, in Brooklyn as a single storefront with three dressing rooms, featuring fur and special occasion dresses. Who is the owner of Kleinfelds? owner Ronnie Rothstein In his own words: Kleinfeld Bridal owner Ronnie Rothstein, Read more…

What is MPP in solar inverter?

What is MPP in solar inverter? This load characteristic is called the maximum power point (MPP). Solar inverters convert the DC power to AC power and may incorporate MPPT: such inverters sample the output power (I-V curve) from the solar modules and apply the proper resistance (load) so as to Read more…