Two : the angular momentum which is affiliated with spin, whose magnitude is quantized, and which can presume both of two attainable Instructions also : the angular momentum of a method of elementary particles derived from their spins and orbital motions — see spin echo, spin label far volteggiare⇒ vtrverbo http://a0b.ir/post/9/8-%D8%B9%D8%A7%D9%85%D9%84-%D8%A7%D8%B5%D9%84%DB%8C-%D8%B1%D8%AA%D8%A8%D9%87-%D8%A8%D9%86%D8%AF%DB%8C-%DA%AF%D9%88%DA%AF%D9%84---%D8%B1%D8%A7%D9%87%D9%86%D9%85%D8%A7%DB%8C-%D8%AC%D8%B3%D8%AA%D8%AC%D9%88%DA%AF%D8%B1%D9%87%D8%A7.html