File:Leiterschaukel-lorentz-force-combined-field.svg
Summary
Category:Valid SVG created with Inkscape#Leiterschaukel-lorentz-force-combined-field.svgCategory:Created with Inkscape-default
Category:SVG created also with Inkscape
and with Inkscape.
| Description |
English: Leiterschaukel lorentz force (combined horseshoe and wire field) |
| Date | |
| Source | Own work |
| Author | MikeRun |
| Other versions |
 |
| SVG development | |
| Source code | Python code# paste this code at the end of VectorFieldPlot 3.0
doc = FieldplotDocument('VFPt_horseshoe-magnet-and-wire', commons=True,
width=600, height=600)
x0, y0 = 0.0, -1.0
h = 2.0
R = 1.0
r = 0.3
field = Field({'charged_discs':[ [x0-R-r, y0+h, x0-R+r, y0+h, -1], [x0+R-r, y0+h, x0+R+r, y0+h, 1] ], 'wires':[[0,y0+h-0.05,-0.2]]})
doc.draw_currents(field)
def startpath(t):
return sc.array([x0 + R - R*cos(t*2*pi), y0 + h + R*sin(t*2*pi)])
def dstartpath(t):
return (startpath(t+1e-6) - startpath(t-1e-6)) / 2e-6
def FieldSum(t0, t1):
return ig.quad(lambda t:
sc.cross(field.F(startpath(t)), dstartpath(t)), t0, t1)[0]
Ftotal = FieldSum(0, 1)
def startpos(s):
t = op.brentq(lambda t: FieldSum(0, t) / Ftotal - s, 0, 1)
return startpath(t)
n = 24
for i in range(n):
p0 = startpos((0.5 + i) / n)
line = FieldLine(field, p0, directions='both', maxr=1000)
fe = [True, False, False, True]
if i in [0, 1, 2, n-1, n-2, n-3]:
fe = [False, False, False, False]
min_arrows = 1
if i == n - 7:
min_arrows = 3
doc.draw_line(line, arrows_style={
'dist':2.0, 'fixed_ends':fe, 'min_arrows':min_arrows})
doc.write()
|
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