Ruegemer_Polarity_a.jpg Ruegemer_Polarity_k.jpg Ruegemer_Polarity_b.jpg Ruegemer_Polarity_c.jpg Ruegemer_Polarity_d.jpg Ruegemer_Polarity_e.jpg Ruegemer_Polarity_j.jpg Ruegemer_Polarity_i.jpg Ruegemer_Polarity_o.jpg Ruegemer_Polarity_n.jpg Ruegemer_Polarity_m_copper.jpg