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%%
%% A DANTE-Edition example
%%
%%
%% Copyright (C) 2010 Herbert Voss
%%
%% It may be distributed and/or modified under the conditions
%% of the LaTeX Project Public License, either version 1.3
%% of this license or (at your option) any later version.
%%
%% See http://www.latex-project.org/lppl.txt for details.
%%
%%
%% ====
% Show page(s) 1
%%
\documentclass[]{article}
\pagestyle{empty}
\setlength\textwidth{201.70511pt}
\setlength\parindent{0pt}
\usepackage[dvipsnames]{pstricks}% Uwe Ziegenhagen
\usepackage{pst-node}
\begin{document}
\psscalebox{0.5}{%
\begin{pspicture}(1,2)(18,14)
\psline[linewidth=2pt,linecolor=black!30](6,0.5)(6,14)
\psline[linewidth=2pt,linecolor=black!30](1,8.5)(6,7)
\psline[linewidth=2pt,linecolor=black!30](1.5,5.5)(11,8.5)
\rput(17,3){\huge $x$}
\rput(5.5,13){\huge $y$}
\rput(10.5,8.75){\huge $z$}
\rput(11,7.1){\huge $\vec{r}$}
%
\psline[linewidth=3pt]{<->}(6,7)(6,11.25)
\rput(5.35,9.4){\huge $R$}
\psline[linewidth=6pt,linecolor=Green]{->}(6.5,12)(4.75,12)
\rput(7.5,12.8){\huge $I d\vec{l}$}
%
\psellipse[doubleline=true,doublecolor=yellow,doublesep=5pt,linecolor=blue](6,7)(3,4.5)
\psline[linewidth=2pt](6,7)(17.5,3.5)
\psline[linewidth=5pt]{->}(6,11.38)(11.95,5.225)
%
\psarc[linewidth=6pt,linecolor=gray](6,8){3.4}{85}{95}
%
\psline[linewidth=5pt,linecolor=gray]{->}(12,5.15)(12,8.15)
\psline[linewidth=5pt]{->}(12,5.15)(15,7.25)
\psline[linewidth=5pt,linecolor=gray]{->}(12,5.15)(15,4.25)
%
\psline[linewidth=2pt](12,8.15)(15,7.25)(15,4.25)
%
\Cnode*[radius=0.2cm](12,5.15){a}
\rput(11.5,4.5){\huge $P$}
%
\rput(12.5,8.9){\huge $dB_y$}
\rput(14.5,3.4){\huge $dB_x$}
\rput(15.5,8){\huge $d \boldmath{\vec{B}}$}
%
\psarc[linewidth=1pt]{<->}(12,5){5.5}{133}{161}
\rput(7.2,8.5){\huge $\theta$}
\end{pspicture}}
\end{document}
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