Learn How to Plot Vector and Stream Plots in Mathematica

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SUMMARY

This discussion focuses on plotting vector and stream plots in Mathematica using the electric field equation $$\vec{E} = -E\cos\theta\left(1 + \frac{2a^3}{r^3}\right)\hat{e_r} + E\sin\theta\left(1 - \frac{a^3}{r^3}\right)\hat{e_{\theta}}$$. Users inquire about the specific values of parameters, with examples given for a = 1.35 and E = 1.66. The conversation emphasizes the need for proper syntax and functions in Mathematica to visualize these vector fields effectively.

PREREQUISITES
  • Familiarity with Mathematica 12.0 syntax and functions
  • Understanding of vector calculus and electric field equations
  • Knowledge of polar coordinates and their representation in Mathematica
  • Basic experience with plotting functions in Mathematica
NEXT STEPS
  • Research how to use the Mathematica function VectorPlot for vector fields
  • Learn about StreamPlot in Mathematica for visualizing flow fields
  • Explore parameterization techniques in Mathematica for dynamic plotting
  • Study the implications of varying parameters in electric field equations
USEFUL FOR

Physicists, engineers, and Mathematica users interested in visualizing electric fields and vector fields in computational physics.

Dustinsfl
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$$
\vec{E} = -E\cos\theta\left(1 + \frac{2a^3}{r^3}\right)\hat{e_r} + E\sin\theta\left(1 - \frac{a^3}{r^3}\right)\hat{e_{\theta}}.
$$

How can I plot this in Mathematica?
 
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dwsmith said:
$$
\vec{E} = -E\cos\theta\left(1 + \frac{2a^3}{r^3}\right)\hat{e_r} + E\sin\theta\left(1 - \frac{a^3}{r^3}\right)\hat{e_{\theta}}.
$$

How can I plot this in Mathematica?

Would this be the E-field for a = 1.35 and E = 1.66?View attachment 431
 

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