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📘 Keep magnetism from meaning lodestone myth

Magnetism is fields and forces from currents and moving charges — not a lodestone fairy tale. Biot–Savart, Ampère, and Lorentz give the working toolkit.

3
lessons
~15 min
to learn
Adults
level
Start the course →

What you’ll learn

  1. Field language beats mythReplace lodestone myth with field language.B is mapped and sourced by currents.
  2. Laws that build BUse Biot–Savart and Ampère appropriately.Symmetry shortcuts when earned.
  3. Force and devicesConnect Lorentz force to devices.Motors redirect charges; vectors matter.

Grounded in trusted sources

  • NIST electromagnetism reference notes
  • Introductory E&M: Biot–Savart and Ampère
  • Lorentz force teaching primers
  • Magnetic field mapping / compass labs
  • SI unit notes for B and current
  • Motor/transformer application overviews

Every Wunder lesson is built from real, reputable sources — never invented.

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