Boulder educational materials

Problem with calculating the charge on a finite conducting needle

Battery, magnet and spinning nail. How does it work? QI XL I14 at 32.00

Paper from March 2012 - how to get out-of-plane reflection/refraction

Happy birthday Maxwell's equations!

UW lecture demos for electromagnetism

UW lecture demos for optics


Introduction to Electrodynamics, by David J. Griffiths (Prentice-Hall). The standard US undergraduate text.
Electromagnetism, Pollack and Stump. Resources (Michigan State University) and self tests.
The Feynmann Lectures in Physics, Volume 2 (Addison-Wesley). A genius's perspective.
Classical Electrodynamics, John D. Jackson (Wiley). The standard graduate text.
The Flying Circus of Physics, Jearl Walker


History of EM (Wikipedia)
History of EM - time line

General sites

Hyperphysics - Electromagnetism
ActivPhysics Online - Electromagnetism
Electromagnetism - Open Directory Project
Wiki - Electromagnetism  Magnetism  EM waves 
Lecture notes on Classical Electromagnetism (Fitzpatrick, Texas)
Electromagnetism animations (PSU)
Book on E&M by Bo Thide (Upsilon)

Applets for plotting electrostatic fields

2D Electrostatic field - (Paul Falstad)
3D Electrostatic field - (Paul Falstad)
Probe charge in user-choosable electric potential (Physlets at Davidson College)
Put charges where you want and plot the resulting field and potential contours (CalTech)

Fourier analysis Applet by Paul Falstad

Lorentz force

Lorentz force on charged particle (no E-field)
Lorentz force on charged particle (general case, Fu-Kwun Wang)
Magnetron operation (on Hyperphysics)

Applets for plotting magnetostatic and electromagnetic fields

3D magnetic field
Motional emf? dc electric motor
Origin of magnetic force between wires thanks to Lorentz invariance (CalTech)


Diamagnetism: Levitating frogs and strawberries
Levitating graphite (Wikipedia)

Refraction and dispersion

Electromagnetic invisibility (Science Magazine, June 2006 )
Negative refractive index
Beating the diffraction limit
Superlens (Science, March 2007)
Group velocity applet and another
Schroedinger wavepacket
Light faster than c
Light slows to a crawl
Light stopped and here


Skin depth calculator


Linearly polarized plane wave animation
Circularly and elliptically polarized plane wave
2D ac magnetic and electric fields - (Paul Falstad)


Dipole radiation animated gif on Wikipedia
Handout by Prof Miller
Electric dipole radiation on Wolfram
Fields of a moving charge (CalTech)
Loops of lines of force
On the Electrodynamics of Moving Bodies - by A. Einstein
Rayleigh scattering


EM wave movies
Waveguide modes applet
Waveguide mode diagrams
Cavity modes applet


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Send questions about this workspace to David Cobden.