30 lines
913 B
Gnuplot
30 lines
913 B
Gnuplot
set xrange [-6:6]
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set yrange [-6:6]
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set iso 30 # taille de la grille de points
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#set samp 37 # nombre de points utilisés
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set samples 40 # nombre de points utilisés
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set clip one
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set zeroaxis
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unset key
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a = .0001
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k = 9e9
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# La charge positive
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Q = 1e-6
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xpos = -3
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set object 1 circle front at xpos,0 size 0.1 fillcolor rgb "black" lw 1
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set arrow from xpos-.06,0 to xpos+.06,0 nohead front
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set arrow from xpos,-0.07 to xpos,0.07 nohead front
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#set arrow from -1,-6 to -1,6 ls 4 nohead
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# La charge négative
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q = -1e-6
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xneg = 3
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set object 2 circle front at xneg,0 size 0.1 fillcolor rgb "black" lw 1
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set arrow from xneg-.06,0 to xneg+.06,0 nohead front
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#set arrow from 1,-6 to 1,6 nohead
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# Le graphe
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plot '++' using 1:2:\
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(a*k*Q*($1-xpos)/(($1-xpos)**2+$2**2)**1.5+a*k*q*($1-xneg)/(($1-xneg)**2+$2**2)**1.5):\
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(a*k*Q*$2/(($1-xpos)**2+$2**2)**1.5+a*k*q*$2/(($1-xneg)**2+$2**2)**1.5)\
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w vect size .06, 15 filled
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pause -1
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