private void Calc_Zr_Click(object sender, EventArgs e)
 {
     Zr = new Environment.Smart_Material.Finite_Field_Impedance((double)XDim.Value, (double)YDim.Value, 10000, 343, 1.2);
 }
 private void Calc_Zr_Click(object sender, EventArgs e)
 {
     Zr = new Environment.Smart_Material.Finite_Field_Impedance((double)XDim.Value, (double)YDim.Value, 10000, 343, 1.2);
 }