Electricity and Magnetism (Electromagnetism) presentations.

Frits F.M. de Mul .

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The Electricity & Magnetism presentations date from courses, presented for 1st year Applied Physics and Mathematics students at University of Twente, Department of Applied Physics. (see below for 3 website-apps)

In addition: Health effects of Low-frequency EM fields (GSM, HV power lines), see below.

The files can be used freely, provided you promise to be so kind as to mention the name of the author and not to change the files without consulting the author.

Available presentations:	PDF-format files and youtube movies (for PPT-presentations : email to: ffmdemul “at” gmail.com)
1. Topics presentations: See Contents	E&M: history (movie ; pdf-file) E&M: Part 1: Electricity (movie part I (A) ; part II (B) ; pdf-file) E&M: Part 2: Magnetism (movie part I (A) ; part II (B) ; pdf-file) E&M: Part 3: Electromagnetic Waves. (movie ; pdf-file)
2. Specialties: Various presentations about notoriously difficult subjects:	Charge and current integration elements (movie ; pdf-file) Multidimensional integrations (1, 2 and 3 dimensional distributions) (movie ; pdf-file) Electric field (E-field) of a thin charged wire (movie ; pdf-file) E-field of a disk (movie ; pdf-file) E-field of spheres (hollow, solid) (movie ; pdf-file) E-field of a dipole (movie ; pdf-file) E-field of a polarized object (movie ; pdf-file) E-field energy (movie ; pdf-file) E-field of a line of dipoles (movie ; pdf-file) Electric motor and Dynamo, Hall effect (movie ; pdf-file) Laplace Potential distribution and Earnshaw's Theorem (movie ; pdf-file) Gauss' Law for cylindrical charge distributions (movie ; pdf-file) Gauss' Law for planar charge distributions (movie ; pdf-file) Divergence Theorem (movie ; pdf-file) Filling a charged capacitor with homogeneous dielectric (complete fill) (movie ; pdf-file) Filling a charged capacitor with inhomogeneous dielectric (partial fill) (movie ; pdf-file) Magnetic field (B-field) of a current wire (movie ; pdf-file) B-field of a rotating homogeneously charged sphere, on-axis (movie ; pdf-file) B-field of a rotating charged conducting sphere, on-axis and off-axis (movie ; pdf-file)
3. Special simulation programs (website-apps)	Dipolar Radiation: Antenna patterns of dipole distributions. Earnshaw's Theorem for building-up of potential distributions (2D and 3D). Magnetic field patterns (incl. Vector potential) of (sets of) solenoids and rotating charged spheres (and sphere segments).
4. Electromagnetic fields and waves : Health effects	Hoe gevaarlijk zijn Mobiele Telefoons en Hoogspanningsleidingen? (In Dutch) (How dangerous are Mobile Phones (GSM) and High Voltage Power Lines?) Movie ;

	ANTENNA: Calculation of an antenna pattern, generated using a set of dipole radiators, each with different positions, phases, currents, angles etc. For an E&M-explanation of the formalism used: Open or download EMAntenna.pdf
	POTENTIAL DISTRIBUTION EARNSHAW-THEOREM : Calculation of a potential distribution, Starting from fixed potential points or lines, and calculating intermediate points using the method of repeated averaging between neighbouring points. 2D and 3D options
	3D plot
	SOLENOIDES: SINGLES AND PAIRS (e.g. HELMHOLZ PAIRS) Calculation of (optional): Magnetic induction (B)-fields (arrows or values; different components or modulus) Vectorpotential (A)-fields (same options) Dipolar far field approximation
	ROTATING CHARGED CONDUCTING SPHERE
	ROTATING CHARGED CONDUCTING SPHERE