36 lines
1.2 KiB
Plaintext
36 lines
1.2 KiB
Plaintext
|
set xrange [-5:5]
|
||
|
|
set yrange [-5:5]
|
||
|
|
set iso 31 # taille de la grille de points
|
||
|
|
#set samp 37 # nombre de points utilisés
|
||
|
|
set samples 51 # nombre de points utilisés
|
||
|
|
#set clip one
|
||
|
|
set zeroaxis
|
||
|
|
unset key
|
||
|
|
prochepos = 0.9
|
||
|
|
procheneg = 0.9
|
||
|
|
a = .0001
|
||
|
|
k = 9e9
|
||
|
|
# La charge positive
|
||
|
|
Q = 1e-6
|
||
|
|
xpos = -2
|
||
|
|
set object 1 circle front at xpos,0 size 0.5 fillcolor rgb "black" lw 1
|
||
|
|
set arrow from xpos-.1,0 to xpos+.1,0 nohead front
|
||
|
|
set arrow from xpos,-0.1 to xpos,0.1 nohead front
|
||
|
|
#set arrow from -1,-6 to -1,6 ls 4 nohead
|
||
|
|
# La charge négative
|
||
|
|
q = 1e-6
|
||
|
|
xneg = 2
|
||
|
|
set object 2 circle front at xneg,0 size 0.5 fillcolor rgb "black" lw 1
|
||
|
|
set arrow from xneg-.1,0 to xneg+.1,0 nohead front
|
||
|
|
set arrow from xneg,-0.1 to xneg,0.1 nohead front
|
||
|
|
# Le graphe
|
||
|
|
plot '++' using (\
|
||
|
|
($1<xpos-prochepos || ($1>xpos+prochepos && $1<xneg-procheneg) || $1>xneg+procheneg) || (($2>prochepos || $2<-prochepos) &&\
|
||
|
|
($1>xpos-prochepos && $1<xpos+prochepos)) || (($2>procheneg || $2<-procheneg) &&\
|
||
|
|
($1>xneg-procheneg && $1<xneg+procheneg)) ? $1 : 1/0\
|
||
|
|
):2:\
|
||
|
|
(a*k*Q*($1-xpos)/(($1-xpos)**2+$2**2)**1.5+a*k*q*($1-xneg)/(($1-xneg)**2+$2**2)**1.5):\
|
||
|
|
(a*k*Q*$2/(($1-xpos)**2+$2**2)**1.5+a*k*q*$2/(($1-xneg)**2+$2**2)**1.5)\
|
||
|
|
w vect size .06, 15 filled
|
||
|
|
pause -1
|